CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 3,376	$ 2,111
Restricted cash	1,020	705
Marketable securities	229	712
Accounts receivable, net	5,552	3,972
Costs and estimated earnings in excess of billings on uncompleted contracts	2,391	2,474
Inventories, net	3,025	3,125
Prepaid expenses and deposits	568	453
Total current assets	16,161	13,552
Property and equipment, net	7,405	7,735
Goodwill	635	635
Intangible assets, net	115	168
Other assets	1,386	2,160
Total assets	25,702	24,250
Current liabilities:
Accounts payable	1,433	1,197
Accrued liabilities	1,183	1,274
Billings in excess of costs and estimated earnings on uncompleted contracts	3,358	2,531
Customer deposits	2,157	3,180
Current portion of retirement obligations	531	517
Current portion of long-term debt	2,995	167
Total current liabilities	11,657	8,866
Pension and retirement obligations, net of current portion	23,567	33,369
Long-term debt, net of current portion	2,362	5,148
Deferred rent obligation	1,514	1,511
Total liabilities	39,100	48,894
Commitments and contingencies (Notes 5, 6, 7 and 9)
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	54,484	54,466
Common stock in treasury, at cost, 352,467 shares	(4,709)	(4,709)
Accumulated deficit	(47,852)	(49,025)
Accumulated other comprehensive loss	(17,609)	(27,664)
Total stockholders' deficit	(13,398)	(24,644)
Total liabilities and stockholders' deficit	$ 25,702	$ 24,250