Accounts Receivable and Contract Assets, Net - Schedule of Accounts Receivable, Net (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
Accounts Receivable Net [Abstract]
Accounts receivable amortized cost	$ 70,030		$ 69,767
Allowance for credit losses	(2,257)	$ (1,753)	(1,125)	$ (1,051)	$ (810)	$ (711)
Net accounts receivable	$ 67,773		$ 68,642