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Supplemental Information - Schedule of Income Tax Valuation Allowance (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Valuation Allowance [Abstract]      
Balance at beginning of period $ 5,374 $ 5,112 $ 1,636
Provision for income taxes - valuation allowance 1,465 262 3,476
Balance at end of period $ 6,839 $ 5,374 $ 5,112