CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (UNAUDITED) (USD $) In Thousands, unless otherwise specified	Common Stock and Additional Paid-in-Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Deficiency [Member]	Total
BALANCE at Dec. 31, 2011	$ 435,368	$ (34,422)	$ (143,563)	$ 257,383
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	0	0	(3,790)	(3,790)
Share-based compensation expense	1,715	0	0	1,715
Tax impact of forfeited vested shares	(210)	0	0	(210)
Other comprehensive (income) loss	0	(39)	0	(39)
BALANCE at Jun. 30, 2012	436,873	(34,461)	(147,353)	255,059
BALANCE at Mar. 31, 2012	436,035	(34,640)	(146,512)	254,883
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	0	0	(841)	(841)
Share-based compensation expense	967	0	0	967
Tax impact of forfeited vested shares	(129)	0	0	(129)
Other comprehensive (income) loss	0	179	0	179
BALANCE at Jun. 30, 2012	436,873	(34,461)	(147,353)	255,059
BALANCE at Dec. 31, 2012	438,277	(51,834)	(321,570)	64,873
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	0	0	(21,309)	(21,309)
Share-based compensation expense	1,353	0	0	1,353
Tax impact of forfeited vested shares	(209)	0	0	(209)
Other comprehensive (income) loss	0	748	0	748
BALANCE at Jun. 30, 2013	439,421	(51,086)	(342,879)	45,456
BALANCE at Mar. 31, 2013	438,868	(51,503)	(337,517)	49,848
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	0	0	(5,362)	(5,362)
Share-based compensation expense	659	0	0	659
Tax impact of forfeited vested shares	(106)	0	0	(106)
Other comprehensive (income) loss	0	417	0	417
BALANCE at Jun. 30, 2013	$ 439,421	$ (51,086)	$ (342,879)	$ 45,456