Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition - Contracts with Customer (Details)

v3.21.1
Revenue Recognition - Contracts with Customer (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Revenue from Contract with Customer [Abstract]    
Contract assets $ 5,143 $ 4,526
Unbilled receivables 11,298 10,942
Contract costs 58 90
Contract liabilities: deferred revenue $ 4,797 $ 4,791