Commitments Unrelated party capital lease (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
August 2009 Capital Lease
   
Capital Leased Assets [Line Items]    
Capital Leases, Future Minimum Payments Due $ 73  
Assumed interest rate under capital lease 11.00%  
Interest Expense, Lessee, Assets under Capital Lease 2 3
September 2009 Capital Lease
   
Capital Leased Assets [Line Items]    
Capital Leases, Future Minimum Payments Due 120  
Assumed interest rate under capital lease 13.00%  
Interest Expense, Lessee, Assets under Capital Lease   $ 1