Balance Sheet Details (Tables)

9 Months Ended

Sep. 30, 2021

Balance Sheet Related Disclosures [Abstract]

Schedule of Inventories

Inventories

	September 30, 2021		December 31, 2020
Raw materials	$	33,012	$	16,962
Work in process		832		1,486
Finished goods		24,426		21,124
Total inventories	$	58,270	$	39,572

Schedule of Property, Plant and Equipment, Net

Property, plant and equipment

	September 30, 2021			December 31, 2020
Property, plant and equipment, net:
Machinery and equipment	$	13,866		$	13,656
Leasehold improvements		5,202			4,633
Computers and software		3,133			2,829
Furniture and fixtures		1,685			1,123
Construction in progress and other		2,386			716
		26,272			22,957
Less: accumulated depreciation and amortization		(16,794	)		(15,445	)
Less: government grants		(222	)		(366	)
Total property, plant and equipment, net	$	9,256		$	7,146

Summary of Product Warranty Liability

The Company accrues warranty costs based on historical trends for the expected material and labor costs to provide warranty services. The Company's standard warranty period is one year from the date of shipment with the ability for customers to purchase an extended warranty of up to five years from the date of shipment. The following table summarizes the activity related to the product warranty liability:

	Nine Months Ended September 30,
	2021			2020
Balance at the beginning of the period	$	1,522		$	1,610
Charged to cost of revenue		636			341
Claims and settlements		(745	)		(1,026	)
Foreign exchange impact		68			(15	)
Balance at the end of the period	$	1,481		$	910

Summary of Contract Assets and Contract Liabilities Related to Contracts with Customers

The opening and closing balances of current and long-term contract assets and contract liabilities related to contracts with customers are as follows:

	Contract assets			Contract liabilities
December 31, 2020	$	6,182		$	6,871
September 30, 2021		3,466			7,536
Increase (decrease)	$	(2,716	)	$	665