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Summary of Operations and Significant Accounting Policies - Receivables (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Accounts Receivable, Net, Current [Abstract]    
Receivables $ 4,289 $ 8,518
Other Receivables 4,559 0
Less: Allowance for doubtful accounts (200) (157)
Total 8,648 8,361
Due from Related Parties, Current [Abstract]    
Receivables, related parties 1,934 1,918
Total $ 1,934 $ 1,918