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This item includes treasury stock repurchased by the entity. 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Includes, but is not limited to, recorded and unrecorded purchase obligations, long-term purchase commitment, and short-term purchase commitment. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).","units":{"USD":[{"end":"2014-12-31","val":235000,"accn":"0000897101-15-000433","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-30","frame":"CY2014Q4I"}]}},"PurchaseObligationDueInFifthYear":{"label":"Purchase Obligation, to be Paid, Year Five","description":"Amount of purchase arrangement to be paid in fifth fiscal year following current fiscal year. Includes, but is not limited to, recorded and unrecorded purchase obligations, long-term purchase commitment, and short-term purchase commitment. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).","units":{"USD":[{"end":"2014-12-31","val":233000,"accn":"0000897101-15-000433","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-30","frame":"CY2014Q4I"},{"end":"2015-12-31","val":235000,"accn":"0000897101-16-002102","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-30","frame":"CY2015Q4I"}]}},"PurchaseObligationDueInFourthYear":{"label":"Purchase Obligation, to be Paid, Year Four","description":"Amount of purchase arrangement to be paid in fourth fiscal year following current fiscal year. Includes, but is not limited to, recorded and unrecorded purchase obligations, long-term purchase commitment, and short-term purchase commitment. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).","units":{"USD":[{"end":"2014-12-31","val":230000,"accn":"0000897101-15-000433","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-30","frame":"CY2014Q4I"},{"end":"2015-12-31","val":233000,"accn":"0000897101-16-002102","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-30","frame":"CY2015Q4I"}]}},"PurchaseObligationDueInNextTwelveMonths":{"label":"Purchase Obligation, to be Paid, Year One","description":"Amount of purchase arrangement to be paid in next fiscal year following current fiscal year. Includes, but is not limited to, recorded and unrecorded purchase obligations, long-term purchase commitment, and short-term purchase commitment. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).","units":{"USD":[{"end":"2014-12-31","val":224000,"accn":"0000897101-15-000433","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-30","frame":"CY2014Q4I"},{"end":"2015-12-31","val":226000,"accn":"0000897101-16-002102","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-30","frame":"CY2015Q4I"}]}},"PurchaseObligationDueInSecondYear":{"label":"Purchase Obligation, to be Paid, Year Two","description":"Amount of purchase arrangement to be paid in second fiscal year following current fiscal year. Includes, but is not limited to, recorded and unrecorded purchase obligations, long-term purchase commitment, and short-term purchase commitment. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).","units":{"USD":[{"end":"2014-12-31","val":226000,"accn":"0000897101-15-000433","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-30","frame":"CY2014Q4I"},{"end":"2015-12-31","val":228000,"accn":"0000897101-16-002102","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-30","frame":"CY2015Q4I"}]}},"PurchaseObligationDueInThirdYear":{"label":"Purchase Obligation, to be Paid, Year Three","description":"Amount of purchase arrangement to be paid in third fiscal year following current fiscal year. Includes, but is not limited to, recorded and unrecorded purchase obligations, long-term purchase commitment, and short-term purchase commitment. 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