CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
ASSETS
Long-term lease receivable, net of current portion	$ 961	$ 1,083
Property and equipment, net	4,595	4,638
Goodwill	635	635
Other assets	1,407	1,222
Total assets	26,601	26,218
Current assets:
Cash and cash equivalents	5,717	6,823
Restricted cash	221	603
Accounts receivable, net	4,019	3,271
Current portion of lease receivable	240	252
Costs and estimated earnings in excess of billings on uncompleted contracts	3,934	3,038
Inventories, net	3,380	3,751
Prepaid expenses and deposits	1,492	902
Total current assets	19,003	18,640
LIABILITIES AND STOCKHOLDERS' EQUITY
Pension and retirement obligations, net of current portion	4,229	4,344
Pension settlement obligation, net of current portion	4,886	4,886
Long-term debt, net of current portion	1,653	1,764
Deferred rent obligation	1,020	1,231
Total liabilities	24,905	24,621
Commitments and contingencies
Total liabilities and stockholders' equity	26,601	26,218
Current liabilities:
Accounts payable	858	1,158
Accrued liabilities	1,354	1,400
Billings in excess of costs and estimated earnings on uncompleted contracts	6,752	6,500
Customer deposits	3,047	2,238
Current portion of retirement obligations	507	507
Current portion of pension settlement obligation	382	382
Current portion of long-term debt	217	211
Total current liabilities	13,117	12,396
Stockholders' equity:
Preferred stock, no par value: 10,000,000 shares authorized; no shares outstanding	0	0
Common stock, $0.20 par value: 30,000,000 shares authorized; 11,616,866 shares issued	2,323	2,323
Additional paid-in-capital	53,726	53,641
Common stock in treasury, at cost, 264,350 shares	(3,532)	(3,532)
Accumulated deficit	(48,675)	(48,689)
Accumulated other comprehensive loss	(2,146)	(2,146)
Total stockholders' equity	$ 1,696	$ 1,597