Business Combinations - Additional Information (Detail) $ in Thousands, kr in Millions			3 Months Ended		9 Months Ended
	Apr. 30, 2021 USD ($) ft²	Apr. 30, 2021 SEK (kr)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Jun. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)
Business Acquisition [Line Items]
Payments for business acquisition, net of cash					$ 6,277	$ 0
Fair value of adjusted inventory			$ 500		500
Fair value of Inventory recognized			100		400
Right of Use Asset			2,307		2,307			$ 2,272
Operating lease liability			4,147		4,147
Net deferred tax assets			15,300		15,300			12,900
Goodwill			6,429		6,429			$ 3,332
Revenue			22,411	$ 18,923	61,799	56,271
Net income (loss)			664	$ 1,042	(167)	$ 1,546
Smarteq [Member]
Business Acquisition [Line Items]
Working capital adjustments	$ 5
Total cash consideration	6,785
Cash	503
Debt	91
Gross accounts receivable	$ 1,415
Area of lease | ft²	4,080
Lease expiration date	Jul. 31, 2023	Jul. 31, 2023
Right of Use Asset	$ 200
Operating lease liability	200
Goodwill	$ 3,244
Transaction costs							$ 300
Revenue			2,300		3,900
Net income (loss)			$ 100		$ (100)
Smarteq France [Member]
Business Acquisition [Line Items]
Loan term	5 years	5 years
Loan amount	$ 100
Loan interest rate	0.57%	0.57%
Loan maturity date	May 31, 2026	May 31, 2026
Net deferred tax assets	$ 2,400
SPA [Member] | Smarteq [Member]
Business Acquisition [Line Items]
Cash purchase price | kr		kr 53.0
Working capital adjustments | kr		1.6
Net cash adjustment | kr		kr 2.1
Total cash consideration	56,800
Payments for business acquisition, net of cash	$ 6,800