Commitments Unrelated party capital lease (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Capital Leased Assets [Line Items]
Capital Leased Assets, Gross	$ 0	$ 58,000
August 2009 Capital Lease [Member]
Capital Leased Assets [Line Items]
Capital Leases, Future Minimum Payments Due	73,000
Assumed interest rate under capital lease	11.00%
Interest Expense, Lessee, Assets under Capital Lease	3,000	4,000
September 2009 Capital Lease [Member]
Capital Leased Assets [Line Items]
Capital Leases, Future Minimum Payments Due	120,000
Assumed interest rate under capital lease	13.00%
Interest Expense, Lessee, Assets under Capital Lease	$ 1,000	$ 6,000