Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Components of income tax benefit
Current			$ (3,881)
Deferred	(7,522)	(148)	(10,652)
Establish valuation allowance	6,634	148	14,302
Income tax provision (benefit), Total Amount	$ (888)		$ (231)