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	(2,949)	(2,949)
Share-based compensation expense	748	0	0	748
Tax impact of forfeited vested shares	(81)	0	0	(81)
Other comprehensive (income) loss	0	(218)	0	(218)
BALANCE at Mar. 31, 2012	436,035	(34,640)	(146,512)	254,883
BALANCE at Dec. 31, 2012	438,277	(51,834)	(321,570)	64,873
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	0		(15,947)	(15,947)
Share-based compensation expense	694	0	0	694
Tax impact of forfeited vested shares	(103)	0	0	(103)
Other comprehensive (income) loss	0	331	0	331
BALANCE at Mar. 31, 2013	$ 438,868	$ (51,503)	$ (337,517)	$ 49,848