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Revenue from Contracts with Customers - Financial Statement Line Items as Filed and as Adjusted Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net loss	$ (4,028)	$ (6,214)
Product sales	42,292	36,568
Sales, marketing and support expenses	7,546	8,700
Accumulated deficit	(6,430)		$ (2,402)
Current contract assets	(1,211)		(1,086)
Non-current contract assets	(2,153)		(2,661)
Current contract liabilities	(4,531)		(4,445)
Non-current contract liabilities	(4,001)		(4,688)
Non-current deferred income tax asset	(35)		$ (73)
Product
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Product sales	18,432	13,094
Cost of product sales	$ 11,220	$ 9,636

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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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