NOTE 2-DETAILS OF CERTAIN FINANCIAL STATEMENT COMPONENTS

The following tables provide details of selected balance sheet items:


	December 31,
	2016		2015
Inventories	(in thousands)
Raw materials	$	738	$	681
Work-in-process		357		172
Finished goods		173		162
Total inventories	$	1,268	$	1,015


	December 31,
	2016		2015
Property, plant and equipment, net	(in thousands)
Furniture, machinery and equipment	$	914	$	910
Leasehold improvements		514		327
		1,428		1,237
Less: accumulated depreciation		(1,118)		(1,061)
Total property, plant and equipment, net	$	310	$	176

Depreciation expense totaled $57 thousand and $46 thousand in 2016 and 2015, respectively. We retired or otherwise disposed of property, plant and equipment with cost and accumulated depreciation of $1.5 million during 2015 due to the closure of our Camarillo, California facility and subsequent relocation to sites that were more appropriate for our current U.S. production and administrative needs. There were no significant disposals of property, plant and equipment in 2016.


	December 31,
	2016		2015
Intangibles, net	(in thousands)
Patents and trademarks	$	360	$	321
Less: accumulated amortization		(316)		(308)
Total intangibles, net	$	44	$	13

Amortization expense totaled $9 thousand and $10 thousand in 2016 and 2015, respectively. Future amortization on existing intangibles over the next five years is as follows:


Years ending December 31,	(in thousands)
2017	$	11
2018	$	11
2019	$	8
2020	$	8
2021	$	6


	December 31,
	2016		2015
Accrued liabilities	(in thousands)
Accrued warranty	$	2	$	14
Accrued wages and benefits		195		194
Accrued taxes, other than income taxes		5		7
Accrued vacation		77		68
Accrued other		55		21
Total accrued liabilities	$	334	$	304