Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Income Tax Disclosure [Abstract]
Effective income tax rate	31.50%	39.80%	34.00%	42.00%
Statutory income tax rate			35.00%
U.S. Federal Income Tax Expense:
Current	$ 256	$ (3,997)	$ (3,184)	$ (3,714)
Deferred	(2,614)	1,924	(2,452)	2,538
Total	(2,358)	(2,073)	(5,636)	(1,176)
State and Local Income Tax Expense:
Current	14	(115)	(7)	(94)
Deferred	(153)	64	(414)	55
Total	(139)	(51)	(421)	(39)
Total Income Tax Expense:
Current	270	(4,112)	(3,191)	(3,808)
Deferred	(2,767)	1,988	(2,866)	2,593
Total	$ (2,497)	$ (2,124)	$ (6,057)	$ (1,215)