CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (DEFICIT) - USD ($) $ in Thousands	Common stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income	Accumulated Deficit	Total
Increase (Decrease) in Stockholders' Equity
Common Stock, Shares, Issued	47,334,218
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
Common Stock, Shares, Issued	47,334,218
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
Increase (Decrease) in Stockholders' Equity
Common Stock, Shares, Issued	46,398,729
Common Stock, Shares, Issued	46,398,729				45,198,718
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
Increase (Decrease) in Stockholders' Equity
Common Stock, Shares, Issued	45,198,718				45,198,718
Common Stock, Shares, Issued	45,198,718				45,198,718
Cumulative-effect adjustment from adoption of ASU 2016-09 (Note 1)				6,160	$ 6,160
Forfeitures of shares granted to employees (in shares)	(3,824)
Equity-based compensation		11,910			11,910
Foreign currency translation			(2,500)		(2,500)
Issuances of common stock (in shares)	358,130
Exercises of options		1,220			1,220
Exercises of options (in shares)	53,245
Common stock purchases and retirement		(4,492)			(4,492)
Common stock purchases and retirement (in shares)	(127,482)
Dividends paid				(68,210)	(68,210)
Net income				14,929	14,929
Balance at Dec. 31, 2016	$ 45	$ 442,799	$ (17,193)	$ (478,905)	$ (53,254)
Balance (in shares) at Dec. 31, 2016	45,478,787				45,478,787
Increase (Decrease) in Stockholders' Equity
Common Stock, Shares, Issued	45,478,787				45,478,787