Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Earnings	Accumulated Other Comprehensive Loss	Non-Controlling Interest
Beginning balance (in shares) at Dec. 31, 2016		72,635,032
Beginning balance at Dec. 31, 2016	$ 108,175	$ 726	$ 0	$ 116,341	$ (12,391)	$ 3,499
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation recognized	$ 9,642		9,642
Repurchase of common stock (in shares)	(500,000)	(465,240)
Repurchase of common stock	$ (7,671)	$ (5)	(2,702)	(4,964)
Stock options exercised, net of cashless exercise (in shares)		8,798
Stock options exercised, net of cashless exercise	(91)		(91)
Restricted stock grants and units delivered, net of cashless exercise (in shares)		215,343
Restricted stock units delivered, net of cashless	(1,497)	$ 2	(1,499)
Net income	55,419			55,054		365
Cash dividends declared on common stock, $0.05 per share	(21,747)			(21,747)
Other comprehensive loss	1,543				1,543
Ending balance (in shares) at Dec. 31, 2017		72,393,933
Ending balance at Dec. 31, 2017	147,976	$ 723	5,350	148,887	(10,848)	3,864
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation recognized	$ 12,592		12,592
Repurchase of common stock (in shares)	(400,000)	(367,403)
Repurchase of common stock	$ (10,000)	$ (4)	(9,996)
Restricted stock grants and units delivered, net of cashless exercise (in shares)		352,180
Restricted stock units delivered, net of cashless	(2,159)	$ 4	(2,163)
Net income	86,569			86,270		299
Cash dividends declared on common stock, $0.05 per share	(7,273)			(7,273)
Other comprehensive loss	$ (12,941)				(12,941)
Ending balance (in shares) at Dec. 31, 2018	72,378,710	72,378,710
Ending balance at Dec. 31, 2018	$ 215,606	$ 723	5,783	228,742	(23,789)	4,147
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation recognized	$ 13,570		13,570
Repurchase of common stock (in shares)	(1,100,000)	(1,104,389)
Repurchase of common stock	$ (31,822)	$ (11)	(10,496)	(21,315)
Restricted stock grants and units delivered, net of cashless exercise (in shares)		725,940
Restricted stock units delivered, net of cashless	(8,849)	$ 8	(8,857)
Net income	103,700			103,469		231
Cash dividends declared on common stock, $0.05 per share	(14,420)			(14,420)
Other comprehensive loss	$ (6,162)				(6,220)	58
Ending balance (in shares) at Dec. 31, 2019	72,000,261	72,000,261
Ending balance at Dec. 31, 2019	$ 271,623	$ 720	$ 0	$ 296,476	$ (30,009)	$ 4,436