Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Warrant shares to be issued	2,600,000
Earnings Per Share Reconciliation [Abstract]
Earnings from continuing operations	$ 9,796	$ 8,171
Fair Value Adjustment of Warrants, net of tax	(1,539)
Fair Value Adjustment of Warrants	1,700	0
Net Income (Loss) Available to Common Stockholders, Diluted	$ 8,257	$ 8,171
Weighted-average shares outstanding for basic earnings per share (in shares)	59,133,000	63,636,000
Common equivalent shares:
Effect of stock-based compensation awards (in shares)	684,000	809,000
Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants	5,132,000	612,000
Weighted-average shares outstanding assuming dilution (in shares)	64,949,000	65,057,000
Basic earnings per share from continuing operations (in dollars per share)	$ 0.17	$ 0.13
Diluted earnings per share from continuing operations (in dollars per share)	$ 0.13	$ 0.13
Anti-dilutive securities excluded from computation of earnings per share (in shares)	0	0
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	12,300,000