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Stock Repurchases	12 Months Ended
Stock Repurchases	Dec. 31, 2018
Stock Repurchases [Abstract]
Stock Repurchases	Stock Repurchases Effective February 6, 2017 the Company's Board of Directors unanimously approved an additional authorized share repurchase plan of $150.0 million. The Board directed that the repurchases be funded with available cash balances and cash generated by the Company's operating activities. Under certain circumstances the aggregate amount of repurchases of the Company's equity shares may be limited by the terms and underlying financial covenants regarding the Company's commercial bank financing facility. The Company's share repurchase plan’s terms have been structured to comply with the SEC’s Rule 10b-18, and are subject to market conditions and applicable legal requirements. The program does not obligate the Company to acquire any specific number of shares and may be suspended or terminated at any time. All purchases are made in the open market. Treasury stock is recorded at its acquired cost. During 2018 the Company repurchased 996,773 shares of its common stock under these plans for total consideration of $49.6 million. During 2017 the Company repurchased 687,048 shares of its common stock under this plan for total consideration of $39.4 million. During 2016 the Company repurchased 1,479,454 shares of its common stock under this plan for total consideration of $65.3 million. As of December 31, 2018 the Company had $84.2 million remaining in its share repurchase authorization.