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Revenue Recognition - Schedule of Contract Liabilities (Details) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2020
Dec. 31, 2019
Revenue Recognition [Abstract]    
Balance $ 462 $ 1,297
New performance obligations 198 1,093
Revenue recognized (540)  
Balance 120 462
Less non-current portion (2)
Current portion $ 120 $ 460