Stock-Based Compensation (Details 5) (Performance Stock Units (PSUs) [Member], USD $) In Thousands, except Per Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011
Performance Stock Units (PSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance stock units	345	350
Performance stock units, weighted-average grant date fair value	$ 1.90	$ 1.90
Performance stock units forfeited	(5)
Performance stock units forfeited, weighted-average grant date fair value	$ 1.90