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Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.","units":{"USD":[{"end":"2012-12-31","val":1301000,"accn":"0001042783-13-000013","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-18"},{"end":"2012-12-31","val":1301000,"accn":"0001042783-14-000009","fy":2012,"fp":"FY","form":"10-K/A","filed":"2014-02-07","frame":"CY2012Q4I"},{"end":"2013-12-31","val":1232000,"accn":"0001042783-14-000023","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-10","frame":"CY2013Q4I"},{"end":"2014-12-31","val":873000,"accn":"0001042783-15-000017","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-11","frame":"CY2014Q4I"}]}},"OperatingLeasesFutureMinimumPaymentsDueInFiveYears":{"label":"Operating Leases, Future Minimum Payments, Due in Five Years","description":"Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. 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