CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (UNAUDITED) (USD $) In Thousands, unless otherwise specified	Common Stock and Additional Paid-in-Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Accumulated Deficiency [Member]	Total
BALANCE at Dec. 31, 2012	$ 438,277	$ (51,834)	$ (321,570)	$ 64,873
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	0	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	0	331	0	331
BALANCE at Mar. 31, 2013	438,868	(51,503)	(337,517)	49,848
BALANCE at Dec. 31, 2013	440,479	(18,712)	(359,883)	61,884
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	0	0	(3,573)	(3,573)
Share-based compensation expense	499	0	0	499
Tax impact of forfeited vested shares	(253)	0	0	(253)
Other comprehensive income	0	333	0	333
BALANCE at Mar. 31, 2014	$ 440,725	$ (18,379)	$ (363,456)	$ 58,890