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FDIC Insured Amount","description":"The amount of cash deposited in financial institutions as of the balance sheet date that is insured by the Federal Deposit Insurance Corporation.","units":{"USD":[{"end":"2014-12-31","val":250000,"accn":"0001144204-15-017329","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-19","frame":"CY2014Q4I"},{"end":"2015-12-31","val":250000,"accn":"0001144204-16-089934","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-24","frame":"CY2015Q4I"}]}},"CertificatesOfDepositAtCarryingValue":{"label":"Certificates of Deposit, at Carrying Value","description":"A savings certificate entitling the Entity (that is, bearer) to receive interest at an established maturity date, based upon a fixed interest rate. A certificate of deposit may be issued in any denomination. Certificates of deposit are generally issued by commercial banks and, therefore, insured by the FDIC (up to the prescribed limit). Certificates of deposit generally restrict holders from withdrawing funds on demand without the incurrence of penalties. Generally, only certificates of deposit with original maturities of three months or less qualify as cash equivalents. Original maturity means original maturity to the entity holding the investment. As a related example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.","units":{"EUR":[{"end":"2010-12-31","val":3750000,"accn":"0001144204-13-017375","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-26","frame":"CY2010Q4I"}],"USD":[{"end":"2010-12-31","val":4900000,"accn":"0001144204-13-017375","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-26","frame":"CY2010Q4I"}]}},"CommonStockDividendsPerShareCashPaid":{"label":"Common Stock, Dividends, Per Share, Cash Paid","description":"Aggregate dividends paid during the period for each share of common stock 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to Acquire Debt Securities, Available-for-sale","description":"Amount of cash outflow to acquire investment in debt security measured at fair value with change in fair value recognized in other comprehensive income 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The cash portion only of the acquisition 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