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Property and Equipment	9 Months Ended
Property and Equipment	Sep. 30, 2015
Property, Plant and Equipment [Abstract]
Property and Equipment	Property and Equipment Property and equipment are net of accumulated depreciation of $256.6 million and $248.2 million at September 30, 2015 and December 31, 2014, respectively. Property and equipment, net, as of September 30, 2015, includes land and a building valued at approximately $2.2 million that are held for sale.