CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income	Accumulated Deficit
Balance at Dec. 31, 2010	$ 151,801	$ 46	$ 482,737	$ 1,044	$ (332,026)
Balance (in shares) at Dec. 31, 2010		45,838,510
Increase (Decrease) in Stockholders' Equity
Forfeitures of shares granted to employees (in shares)		(33,038)
Equity-based compensation	8,620		8,620
Foreign currency translation	(1,626)			(1,626)
Issuances of common stock (in shares)		224,920
Exercises of options	633		633
Exercises of options (in shares)		95,311
Common stock purchases and retirement	(2,969)		(2,969)
Common stock purchases and retirement (in shares)		(232,356)
Net income (loss)	7,542				7,542
Balance at Dec. 31, 2011	164,001	46	489,021	(582)	(324,484)
Balance (in shares) at Dec. 31, 2011		45,893,347
Increase (Decrease) in Stockholders' Equity
Forfeitures of shares granted to employees (in shares)		(82,580)
Equity-based compensation	9,164		9,164
Foreign currency translation	1,249			1,249
Issuances of common stock	1	1
Issuances of common stock (in shares)		1,338,120
Exercises of options	404		404
Exercises of options (in shares)		42,341
Common stock purchases and retirement	(1,265)		(1,265)
Common stock purchases and retirement (in shares)		(74,584)
Excess income tax benefit	25		25
Dividends paid	(9,549)				(9,549)
Net income (loss)	(4,251)				(4,251)
Balance at Dec. 31, 2012	159,779	47	497,349	667	(338,284)
Balance (in shares) at Dec. 31, 2012	47,116,644	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 (loss)	56,689				56,689
Balance at Dec. 31, 2013	$ 193,492	$ 47	$ 508,256	$ 2,136	$ (316,947)
Balance (in shares) at Dec. 31, 2013	47,334,218	47,334,218