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Schedule of Deferred Commission Expense (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Schedule of Deferred Commission Expense [Roll Forward]    
Balance at beginning of period $ 3,621 $ 2,882
Costs capitalized 492 348
Amortization (321) (227)
Balance at end of period $ 3,792 $ 3,003