SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2019

Estimated useful lives 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 are as follows (in thousands):



	December 31,
	2019			2018
Computer equipment and purchased software	$	3,011		$	3,167
Machinery and equipment	699			821
Furniture and fixtures	1,115			1,113
Leasehold improvements⁽¹⁾	3,897			3,897
Total	8,722			8,998
Less accumulated depreciation and amortization⁽¹⁾	(7,496		)	(6,655		)
Property and equipment, net	$	1,226		$	2,343

(1) In the fourth quarter 2019, the Company announced its decision to exit the San Jose California facility (“SJ Facility”) by March 31, 2020. The Company accelerated the amortization of its SJ Facility leasehold improvements over the remaining estimated life which is estimated to be through March 31, 2020. As of December 31, 2019, the net book value of the SJ Facility leasehold improvements was $0.9 million and will be fully amortized by March 31, 2020.

Advertising expense

Advertising expense was as follows (in thousands):



	Year ended December 31,
	2019		2018		2017
Advertising expense	$	173	$	67	$	221