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Shares issued include shares outstanding and shares held in the treasury.","units":{"shares":[{"end":"2009-12-31","val":23748561,"accn":"0001144204-12-048891","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-08-30","frame":"CY2009Q4I"},{"end":"2010-12-31","val":27060561,"accn":"0001144204-12-048891","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-08-30"},{"end":"2010-12-31","val":27060561,"accn":"0001144204-12-017870","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-29"},{"end":"2010-12-31","val":27060561,"accn":"0001144204-11-063685","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-14"},{"end":"2010-12-31","val":27060561,"accn":"0001144204-11-045921","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-12"},{"end":"2010-12-31","val":542856,"accn":"0001062993-13-001896","fy":2012,"fp":"FY","form":"10-K","filed":"2013-04-15","frame":"CY2010Q4I"},{"end":"2011-06-30","val":28303418,"accn":"0001144204-11-045921","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-12","frame":"CY2011Q2I"},{"end":"2011-09-30","val":28303418,"accn":"0001144204-11-063685","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-14","frame":"CY2011Q3I"},{"end":"2011-12-31","val":32867028,"accn":"0001144204-12-048891","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-08-30"},{"end":"2011-12-31","val":32867028,"accn":"0001144204-12-030262","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-17"},{"end":"2011-12-31","val":32867028,"accn":"0001144204-12-017870","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-29"},{"end":"2011-12-31","val":32867028,"accn":"0001062993-13-001896","fy":2012,"fp":"FY","form":"10-K","filed":"2013-04-15","frame":"CY2011Q4I"},{"end":"2011-12-31","val":32867028,"accn":"0001062993-12-005001","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-19"},{"end":"2012-03-31","val":45081594,"accn":"0001144204-12-030262","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-17","frame":"CY2012Q1I"},{"end":"2012-06-30","val":47470406,"accn":"0001144204-12-048891","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-08-30","frame":"CY2012Q2I"},{"end":"2012-09-30","val":47470406,"accn":"0001062993-12-005001","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-19","frame":"CY2012Q3I"},{"end":"2012-12-31","val":47620406,"accn":"0001062993-14-002462","fy":2013,"fp":"FY","form":"10-K","filed":"2014-04-30","frame":"CY2012Q4I"},{"end":"2012-12-31","val":47620406,"accn":"0001062993-13-005873","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-18"},{"end":"2012-12-31","val":47620406,"accn":"0001062993-13-004583","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-09-11"},{"end":"2012-12-31","val":47620406,"accn":"0001062993-13-002721","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-21"},{"end":"2012-12-31","val":47620406,"accn":"0001062993-13-001896","fy":2012,"fp":"FY","form":"10-K","filed":"2013-04-15"},{"end":"2013-03-31","val":50931813,"accn":"0001062993-13-002721","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-21","frame":"CY2013Q1I"},{"end":"2013-06-30","val":62215597,"accn":"0001062993-13-004583","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-09-11","frame":"CY2013Q2I"},{"end":"2013-09-30","val":72067441,"accn":"0001062993-13-005873","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-18","frame":"CY2013Q3I"},{"end":"2013-12-31","val":101325435,"accn":"0001062993-14-002462","fy":2013,"fp":"FY","form":"10-K","filed":"2014-04-30","frame":"CY2013Q4I"}]}},"CommonStockSharesOutstanding":{"label":"Common Stock, Shares, Outstanding","description":"Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.","units":{"shares":[{"end":"2009-12-31","val":23748561,"accn":"0001144204-12-048891","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-08-30","frame":"CY2009Q4I"},{"end":"2010-12-31","val":27060561,"accn":"0001144204-12-048891","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-08-30"},{"end":"2010-12-31","val":27060561,"accn":"0001144204-12-017870","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-29"},{"end":"2010-12-31","val":27060561,"accn":"0001144204-11-063685","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-14"},{"end":"2010-12-31","val":27060561,"accn":"0001144204-11-045921","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-12"},{"end":"2010-12-31","val":27060561,"accn":"0001062993-13-001896","fy":2012,"fp":"FY","form":"10-K","filed":"2013-04-15","frame":"CY2010Q4I"},{"end":"2011-06-30","val":28303418,"accn":"0001144204-11-045921","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-12","frame":"CY2011Q2I"},{"end":"2011-09-30","val":28303418,"accn":"0001144204-11-063685","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-14","frame":"CY2011Q3I"},{"end":"2011-12-31","val":32867028,"accn":"0001144204-12-048891","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-08-30"},{"end":"2011-12-31","val":32867028,"accn":"0001144204-12-030262","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-17"},{"end":"2011-12-31","val":32867028,"accn":"0001144204-12-017870","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-29"},{"end":"2011-12-31","val":32867028,"accn":"0001062993-14-002462","fy":2013,"fp":"FY","form":"10-K","filed":"2014-04-30","frame":"CY2011Q4I"},{"end":"2011-12-31","val":32867028,"accn":"0001062993-13-005873","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-18"},{"end":"2011-12-31","val":32867028,"accn":"0001062993-13-004583","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-09-11"},{"end":"2011-12-31","val":32867028,"accn":"0001062993-13-002721","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-21"},{"end":"2011-12-31","val":32867028,"accn":"0001062993-13-001896","fy":2012,"fp":"FY","form":"10-K","filed":"2013-04-15"},{"end":"2011-12-31","val":32867028,"accn":"0001062993-12-005001","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-19"},{"end":"2012-03-31","val":45081594,"accn":"0001144204-12-030262","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-17","frame":"CY2012Q1I"},{"end":"2012-06-30","val":47470406,"accn":"0001144204-12-048891","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-08-30","frame":"CY2012Q2I"},{"end":"2012-09-30","val":47470406,"accn":"0001062993-12-005001","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-19","frame":"CY2012Q3I"},{"end":"2012-12-31","val":47620406,"accn":"0001062993-14-002462","fy":2013,"fp":"FY","form":"10-K","filed":"2014-04-30","frame":"CY2012Q4I"},{"end":"2012-12-31","val":47620406,"accn":"0001062993-13-005873","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-18"},{"end":"2012-12-31","val":47620406,"accn":"0001062993-13-004583","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-09-11"},{"end":"2012-12-31","val":47620406,"accn":"0001062993-13-002721","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-21"},{"end":"2012-12-31","val":47620406,"accn":"0001062993-13-001896","fy":2012,"fp":"FY","form":"10-K","filed":"2013-04-15"},{"end":"2013-03-31","val":50931813,"accn":"0001062993-13-002721","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-21","frame":"CY2013Q1I"},{"end":"2013-06-30","val":62215597,"accn":"0001062993-13-004583","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-09-11","frame":"CY2013Q2I"},{"end":"2013-09-30","val":72067441,"accn":"0001062993-13-005873","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-18","frame":"CY2013Q3I"},{"end":"2013-12-31","val":101325435,"accn":"0001062993-14-002462","fy":2013,"fp":"FY","form":"10-K","filed":"2014-04-30","frame":"CY2013Q4I"}]}},"CommonStockSharesSubscribedButUnissued":{"label":"Common Stock, Shares Subscribed but Unissued","description":"Amount of common stock allocated to investors to buy shares of a new issue of common stock before they are offered to the public. When stock is sold on a subscription basis, the issuer does not initially receive the total proceeds. In general, the issuer does not issue the shares to the investor until it receives the entire proceeds.","units":{"shares":[{"end":"2009-12-31","val":1830825,"accn":"0001144204-12-048891","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-08-30","frame":"CY2009Q4I"},{"end":"2010-12-31","val":542856,"accn":"0001144204-12-048891","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-08-30","frame":"CY2010Q4I"},{"end":"2010-12-31","val":542857,"accn":"0001144204-12-017870","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-29"},{"end":"2010-12-31","val":542857,"accn":"0001144204-11-063685","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-14"},{"end":"2010-12-31","val":542857,"accn":"0001144204-11-045921","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-12"},{"end":"2011-06-30","val":0,"accn":"0001144204-11-045921","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-12","frame":"CY2011Q2I"},{"end":"2011-09-30","val":0,"accn":"0001144204-11-063685","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-14","frame":"CY2011Q3I"},{"end":"2011-12-31","val":0,"accn":"0001144204-12-048891","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-08-30"},{"end":"2011-12-31","val":0,"accn":"0001144204-12-017870","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-29"},{"end":"2011-12-31","val":0,"accn":"0001062993-13-001896","fy":2012,"fp":"FY","form":"10-K","filed":"2013-04-15","frame":"CY2011Q4I"},{"end":"2011-12-31","val":0,"accn":"0001062993-12-005001","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-19"},{"end":"2012-06-30","val":567500,"accn":"0001144204-12-048891","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-08-30","frame":"CY2012Q2I"},{"end":"2012-09-30","val":5529786,"accn":"0001062993-12-005001","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-19","frame":"CY2012Q3I"},{"end":"2012-12-31","val":6423708,"accn":"0001062993-14-002462","fy":2013,"fp":"FY","form":"10-K","filed":"2014-04-30","frame":"CY2012Q4I"},{"end":"2012-12-31","val":6423708,"accn":"0001062993-13-005873","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-18"},{"end":"2012-12-31","val":6423708,"accn":"0001062993-13-004583","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-09-11"},{"end":"2012-12-31","val":6423708,"accn":"0001062993-13-002721","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-21"},{"end":"2012-12-31","val":6423708,"accn":"0001062993-13-001896","fy":2012,"fp":"FY","form":"10-K","filed":"2013-04-15"},{"end":"2013-03-31","val":6433034,"accn":"0001062993-13-002721","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-21","frame":"CY2013Q1I"},{"end":"2013-06-30","val":6433034,"accn":"0001062993-13-004583","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-09-11","frame":"CY2013Q2I"},{"end":"2013-09-30","val":11918020,"accn":"0001062993-13-005873","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-18","frame":"CY2013Q3I"},{"end":"2013-12-31","val":14480278,"accn":"0001062993-14-002462","fy":2013,"fp":"FY","form":"10-K","filed":"2014-04-30","frame":"CY2013Q4I"}]}},"CommonStockSharesSubscriptions":{"label":"Common Stock, Value, Subscriptions","description":"Monetary value of common stock allocated to investors to buy shares of a new issue of common stock before they are offered to the public. When stock is sold on a subscription basis, the issuer does not initially receive the total proceeds. In general, the issuer does not issue the shares to the investor until it receives the entire proceeds.","units":{"USD":[{"end":"2010-12-31","val":543,"accn":"0001144204-12-017870","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-29","frame":"CY2010Q4I"},{"end":"2010-12-31","val":543,"accn":"0001144204-11-063685","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-14"},{"end":"2010-12-31","val":543,"accn":"0001144204-11-045921","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-12"},{"end":"2011-12-31","val":0,"accn":"0001062993-13-001896","fy":2012,"fp":"FY","form":"10-K","filed":"2013-04-15","frame":"CY2011Q4I"},{"end":"2011-12-31","val":0,"accn":"0001062993-12-005001","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-19"},{"end":"2012-06-30","val":567,"accn":"0001144204-12-048891","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-08-30","frame":"CY2012Q2I"},{"end":"2012-09-30","val":5529,"accn":"0001062993-12-005001","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-19","frame":"CY2012Q3I"},{"end":"2012-12-31","val":6424,"accn":"0001062993-14-002462","fy":2013,"fp":"FY","form":"10-K","filed":"2014-04-30","frame":"CY2012Q4I"},{"end":"2012-12-31","val":6424,"accn":"0001062993-13-005873","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-18"},{"end":"2012-12-31","val":6424,"accn":"0001062993-13-004583","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-09-11"},{"end":"2012-12-31","val":6424,"accn":"0001062993-13-002721","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-21"},{"end":"2012-12-31","val":6424,"accn":"0001062993-13-001896","fy":2012,"fp":"FY","form":"10-K","filed":"2013-04-15"},{"end":"2013-03-31","val":6434,"accn":"0001062993-13-002721","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-21","frame":"CY2013Q1I"},{"end":"2013-06-30","val":6434,"accn":"0001062993-13-004583","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-09-11","frame":"CY2013Q2I"},{"end":"2013-09-30","val":11918,"accn":"0001062993-13-005873","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-18","frame":"CY2013Q3I"},{"end":"2013-12-31","val":14480,"accn":"0001062993-14-002462","fy":2013,"fp":"FY","form":"10-K","filed":"2014-04-30","frame":"CY2013Q4I"}]}},"CommonStockValue":{"label":"Common Stock, Value, Issued","description":"Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. 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Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the 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