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Cash and Cash Equivalents, Current","description":"Amount of cash and cash equivalents restricted as to withdrawal or usage, classified as current. 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The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).","units":{"USD":[{"start":"2011-01-01","end":"2011-12-31","val":560000,"accn":"0001104659-14-018713","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2011"},{"start":"2011-01-01","end":"2011-12-31","val":560000,"accn":"0001104659-13-020211","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-01-01","end":"2011-12-31","val":560000,"accn":"0001104659-12-018417","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-15"},{"start":"2012-01-01","end":"2012-12-31","val":1424000,"accn":"0001104659-14-018713","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012"},{"start":"2012-01-01","end":"2012-12-31","val":1424000,"accn":"0001104659-13-020211","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2013-01-01","end":"2013-12-31","val":4174000,"accn":"0001104659-14-018713","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2013"}]}},"Supplies":{"label":"Prepaid Supplies","description":"Amount of consideration paid in advance for supplies that provide economic benefits within a future period of one year or the normal operating cycle, if longer.","units":{"USD":[{"end":"2010-12-31","val":2850000,"accn":"0001104659-12-018417","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-15","frame":"CY2010Q4I"},{"end":"2010-12-31","val":2850000,"accn":"0001104659-11-063041","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-10"},{"end":"2010-12-31","val":2850000,"accn":"0001104659-11-051319","fy":2011,"fp":"Q2","form":"10-Q/A","filed":"2011-09-12"},{"end":"2011-06-30","val":4315000,"accn":"0001104659-11-051319","fy":2011,"fp":"Q2","form":"10-Q/A","filed":"2011-09-12","frame":"CY2011Q2I"},{"end":"2011-09-30","val":3749000,"accn":"0001104659-11-063041","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-10","frame":"CY2011Q3I"},{"end":"2011-12-31","val":3143000,"accn":"0001104659-12-035613","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-10","frame":"CY2011Q4I"},{"end":"2011-12-31","val":3143000,"accn":"0001104659-12-018417","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-15"},{"end":"2012-03-31","val":5302000,"accn":"0001104659-12-035613","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-10","frame":"CY2012Q1I"}]}},"TaxesPayableCurrent":{"label":"Taxes Payable, Current","description":"Carrying value as of the balance sheet date of obligations incurred and payable for statutory income, sales, use, payroll, excise, real, property and other taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).","units":{"USD":[{"end":"2010-12-31","val":6724000,"accn":"0001104659-12-018417","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-15","frame":"CY2010Q4I"},{"end":"2010-12-31","val":6724000,"accn":"0001104659-11-063041","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-10"},{"end":"2010-12-31","val":6724000,"accn":"0001104659-11-051319","fy":2011,"fp":"Q2","form":"10-Q/A","filed":"2011-09-12"},{"end":"2011-06-30","val":3585000,"accn":"0001104659-11-051319","fy":2011,"fp":"Q2","form":"10-Q/A","filed":"2011-09-12","frame":"CY2011Q2I"},{"end":"2011-09-30","val":5217000,"accn":"0001104659-11-063041","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-10","frame":"CY2011Q3I"},{"end":"2011-12-31","val":6936000,"accn":"0001104659-13-020211","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13","frame":"CY2011Q4I"},{"end":"2011-12-31","val":6936000,"accn":"0001104659-12-075452","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":6936000,"accn":"0001104659-12-057606","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":6936000,"accn":"0001104659-12-035613","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-10"},{"end":"2011-12-31","val":6936000,"accn":"0001104659-12-018417","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-15"},{"end":"2012-03-31","val":2032000,"accn":"0001104659-12-035613","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-10","frame":"CY2012Q1I"},{"end":"2012-06-30","val":3620000,"accn":"0001104659-12-057606","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":5326000,"accn":"0001104659-12-075452","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":326000,"accn":"0001104659-14-018713","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2012-12-31","val":326000,"accn":"0001104659-13-079319","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-10-31"},{"end":"2012-12-31","val":326000,"accn":"0001104659-13-057394","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-07-30"},{"end":"2012-12-31","val":326000,"accn":"0001104659-13-039322","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-09"},{"end":"2012-12-31","val":326000,"accn":"0001104659-13-020211","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2013-03-31","val":1963000,"accn":"0001104659-13-039322","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-09","frame":"CY2013Q1I"},{"end":"2013-06-30","val":3691000,"accn":"0001104659-13-057394","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-07-30","frame":"CY2013Q2I"},{"end":"2013-09-30","val":5457000,"accn":"0001104659-13-079319","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-10-31","frame":"CY2013Q3I"},{"end":"2013-12-31","val":268000,"accn":"0001104659-14-018713","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2013Q4I"}]}}}}}