CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jul. 01, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 3,242	$ 3,734
Restricted cash	602	601
Accounts receivable, net	3,785	4,825
Costs and estimated earnings in excess of billings on uncompleted contracts	3,053	2,695
Inventories, net	4,431	4,072
Prepaid expenses and deposits	714	1,038
Total current assets	15,827	16,965
Property and equipment, net	4,653	4,735
Goodwill	635	635
Intangible assets, net	13	27
Other assets	1,184	1,082
Total assets	22,312	23,444
Current liabilities:
Accounts payable	1,113	1,062
Accrued liabilities	1,302	1,031
Billings in excess of costs and estimated earnings on uncompleted contracts	3,998	3,995
Customer deposits	2,836	3,232
Current portion of retirement obligations	541	480
Current portion of pension settlement obligation	356	356
Current portion of long-term debt	206	199
Total current liabilities	10,352	10,355
Pension and retirement obligations, net of current portion	4,703	4,839
Pension settlement obligation, net of current portion	5,268	5,268
Long-term debt, net of current portion	1,853	1,975
Deferred rent obligation	1,442	1,653
Total liabilities	23,618	24,090
Stockholders' deficit:
Preferred stock, no par value: 10,000,000 shares authorized; no shares outstanding
Common stock, $0.20 par value: 30,000,000 shares authorized; 11,441,666 shares issued	2,288	2,288
Additional paid-in-capital	53,507	53,434
Common stock in treasury, at cost, 264,350 shares	(3,532)	(3,532)
Accumulated deficit	(51,165)	(50,432)
Accumulated other comprehensive loss	(2,404)	(2,404)
Total stockholders' deficit	(1,306)	(646)
Total liabilities and stockholders' deficit	$ 22,312	$ 23,444