CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income	Accumulated Deficit	Total
Balance at Dec. 31, 2012	$ 47	$ 497,349	$ 667	$ (338,284)	$ 159,779
Balance (in shares) at Dec. 31, 2012	47,116,644
Increase (Decrease) in Stockholders' Equity
Forfeitures of shares granted to employees (in shares)	(46,335)
Equity-based compensation		9,557			9,557
Foreign currency translation			1,469		1,469
Issuances of common stock (in shares)	175,500
Exercises of options		1,218			1,218
Exercises of options (in shares)	88,409
Excess income tax benefit		132			132
Dividends paid				(35,352)	(35,352)
Net income				56,689	56,689
Balance at Dec. 31, 2013	$ 47	508,256	2,136	(316,947)	193,492
Balance (in shares) at Dec. 31, 2013	47,334,218
Increase (Decrease) in Stockholders' Equity
Forfeitures of shares granted to employees (in shares)	(35,290)
Equity-based compensation		10,385			10,385
Foreign currency translation			(8,598)		(8,598)
Issuances of common stock		1			1
Issuances of common stock (in shares)	792,550
Exercises of options		533			533
Exercises of options (in shares)	38,379
Common stock purchases and retirement	$ (1)	(58,582)			(58,583)
Common stock purchases and retirement (in shares)	(1,731,128)
Excess income tax deficiency		(17)			(17)
Dividends paid				(54,216)	(54,216)
Net income				797	797
Balance at Dec. 31, 2014	$ 46	460,576	(6,462)	(370,366)	$ 83,794
Balance (in shares) at Dec. 31, 2014	46,398,729				46,398,729
Increase (Decrease) in Stockholders' Equity
Forfeitures of shares granted to employees (in shares)	(47,705)
Equity-based compensation		12,554			$ 12,554
Foreign currency translation			(8,231)		(8,231)
Issuances of common stock (in shares)	62,900
Exercises of options		423			423
Exercises of options (in shares)	27,676
Common stock purchases and retirement	$ (1)	(39,394)			(39,395)
Common stock purchases and retirement (in shares)	(1,242,882)
Excess income tax benefit		2			2
Dividends paid				(66,314)	(66,314)
Net income				4,896	4,896
Balance at Dec. 31, 2015	$ 45	$ 434,161	$ (14,693)	$ (431,784)	$ (12,271)
Balance (in shares) at Dec. 31, 2015	45,198,718				45,198,718