Income Taxes (Details 1)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	35.00%	35.00%	35.00%
Effective Income Tax Rate Reconciliation, State and Local Income Taxes	3.30%	3.40%	2.30%
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance	(40.80%)	(45.70%)	(42.30%)
Effective Income Tax Rate Reconciliation, Tax Contingencies	0.00%	(9.00%)	0.00%
Effective Income Tax Rate Reconciliation, Other Adjustments	4.00%	5.30%	7.60%
Effective Income Tax Rate, Continuing Operations	1.50%	(11.00%)	2.60%