BALANCE SHEET DETAILS (Tables)

12 Months Ended

Dec. 31, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of cash and cash equivalents

	December 31,
	2020		2019
Cash	$	13,908	$	23,127
Money market funds	45,614		63,351
Cash and cash equivalents	$	59,522	$	86,478

Schedule of accounts and other receivables

Accounts and other receivables were as follows (in thousands):

	December 31,
	2020		2019
Trade accounts receivable	$	1,618	$	2,972
Other receivables	600		413
Accounts and other receivables	$	2,218	$	3,385

Schedule of Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets were as follows (in thousands)

	December 31,
	2020		2019
Prepaid expenses	$	816	$	933
Contract assets - current	11,623		13,128
Other current assets	171		17
	$	12,610	$	14,078

Schedule of property and equipment

The estimated useful lives are typically as follows:

Computer equipment and purchased software	3 years
Machinery and equipment	3-5 years
Furniture and fixtures	5 years

Property and equipment, net are as follows (in thousands):

	December 31,
	2020		2019
Computer equipment and purchased software	$	2,548	$	3,011
Machinery and equipment	423		699
Furniture and fixtures	1,104		1,115
Leasehold improvements 1	3,892		3,897
Total	7,967		8,722
Less accumulated depreciation and amortization 1	(7,758)		(7,496)
Property and equipment, net	$	209	$	1,226

1 In the fourth quarter 2019, we announced our decision to exit the San Jose California facility (“SJ Facility”) by March 31, 2020. We accelerated the amortization of our SJ Facility leasehold improvements over the remaining estimated life to March 31, 2020. As of December 31, 2019, the net book value of the SJ Facility leasehold improvements was $0.9 million and it was fully amortized by March 31, 2020.

Schedule of other assets, net

Other assets, net are as follows (in thousands):

	December 31,
	2020		2019
Contract assets - Long-term	$	4,596	$	6,928
Lease right-of-use assets	1,607		2,202
Deferred tax assets	2,659		470
Other assets	138		—
Total other assets, net	$	9,000	$	9,600

Schedule of other current assets

Other current liabilities are as follows (in thousands):

	December 31,
	2020		2019
Accrued legal	$	202	$	1,077
Lease liabilities - current	1,382		1,150
Other current liabilities	873		1,251
Total other current liabilities	$	2,457	$	3,478