Organization and Nature of Business; Basis of Presentation; Principles of Consolidation; Significant Accounting Policies - Schedule of Product Warranty Reserve Activity (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Movement in Standard Product Warranty Accrual [Roll Forward]
Beginning balance	$ 184	$ 342	$ 232	$ 403
Provisions	12	0	(10)	0
Warranty cost incurred	(27)	(37)	(53)	(98)
Ending balance	$ 169	$ 305	$ 169	$ 305