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Other Balance Sheet Accounts Details (Tables)

12 Months Ended

Dec. 31, 2020

Property, Plant and Equipment [Abstract]

Schedule of Allowance for Doubtful Accounts

The following table presents the changes in the Company’s allowance for doubtful accounts (in thousands):

			December 31, 2020						December 31, 2019
Allowance for doubtful accounts, beginning balance			$	52					$	319
Increase (decrease) of provision			78						(72)
Write-offs			(89)						(195)
Allowance for doubtful accounts, ending balance			$	41					$	52

Schedule of Inventory

Inventory consisted of the following (in thousands):

			December 31, 2020						December 31, 2019
Raw materials			$	8,395					$	9,495
Finished goods			12,335						12,889
Total inventory			$	20,730					$	22,384

Schedule of Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consisted of the following (in thousands):

			December 31, 2020						December 31, 2019
Prepaid expenses			$	3,818					$	6,163
Deferred contract acquisition costs			5,345						6,231
Other			3,227						2,673
Prepaid expenses and other current assets			$	12,390					$	15,067

Schedule of Property and Equipment, Net

Property and equipment, net, consisted of the following (in thousands):

			Useful Life						December 31, 2020						December 31, 2019
			(in years)
Equipment			1-3						$	25,286					$	22,702
Software			1-3						765						726
Furniture and fixtures			1-3						652						459
Leasehold improvements			1-7						3,616						5,440
Construction in progress									1,677						—
Property and equipment, gross									31,996						29,327
Less: accumulated depreciation									(24,108)						(21,671)
Property and equipment, net									$	7,888					$	7,656

Schedule of Acquired Intangible Assets

Purchased intangible assets, net, consisted of the following (in thousands):

			December 31, 2020																		December 31, 2019
			Cost						Accumulated Amortization						Net						Cost						Accumulated Amortization						Net
Developed technology			$	5,050					$	(4,545)					$	505					$	5,050					$	(3,535)					$	1,515
Patents			2,936						(2,579)						357						2,936						(2,146)						790
Total			$	7,986					$	(7,124)					$	862					$	7,986					$	(5,681)					$	2,305

Schedule of Future Amortization Expense for Purchased Finite-lived Intangible Assets

Future amortization expense for purchased intangible assets as of December 31, 2020 is as follows (in thousands):

Fiscal Year
2021						862

Schedule of Other Assets, Noncurrent [Table Text Block]

Other non-current assets consisted of the following (in thousands):

			December 31, 2020						December 31, 2019
Right-of-use assets			$	28,240					$	33,014
Deferred contract acquisition costs			3,714						3,297
Deposits			2,746						2,338
Net deferred tax assets			944						1,171
Other			2,807						2,026
Total other non-current assets			$	38,451					$	41,846

Schedule of Accrued Liabilities

Accrued liabilities consisted of the following (in thousands):

			December 31, 2020						December 31, 2019
Accrued compensation and benefits			$	19,725					$	12,227
Accrued tax liabilities			3,748						4,354
Lease liabilities			5,260						5,109
Other			8,197						6,066
Total accrued liabilities			$	36,930					$	27,756

Other Noncurrent Liabilities [Table Text Block]

Other non-current liabilities consisted of the following (in thousands):

			December 31, 2020						December 31, 2019
Lease liabilities			$	23,498					$	28,046
Other			859						708
Total other non-current liabilities			$	24,357					$	28,754

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