Annual report pursuant to Section 13 and 15(d)

Debt and Capital Lease Obligations - Capital Lease (Details)

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Debt and Capital Lease Obligations - Capital Lease (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Capital Leases, Future Minimum Payments Due [Abstract]      
2019 $ 325    
2020 60    
Total 385    
Less amounts representing interest 22    
Present value of net minimum lease payments (including current portion of $309) 363    
Interest Paid, Including Capitalized Interest, Operating and Investing Activities 1,841 $ 1,193 $ 1,770
Equipment [Member]      
Capital Lease Obligations [Abstract]      
Equipment 635 635  
Accumulated amortization (518) (413)  
Capital leases, net $ 117 $ 222