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Accounts Receivable and Contract Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Accounts Receivable and Contract Assets [Abstract]
Accounts receivable - customers	$ 5,633	$ 4,574
Other receivables	206	152
Accounts receivable	5,839	4,726
Less: allowance for doubtful accounts	(655)	(305)
Accounts receivable, net	5,184	4,421
Unbilled revenue	2,847	$ 2,276
Change in accounts receivable - customers	1,059
Change in other receivables	54
Change in accounts receivable	1,113
Change in allowance for doubtful accounts	(350)
Change in accounts receivable, net	763
Change in unbilled revenue	$ 571

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- Definition

Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

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Amount of allowance for credit loss on accounts receivable, classified as current.

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current.

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