CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 28, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 1,496	$ 3,932
Restricted cash	780	1,062
Marketable securities	840	1,666
Accounts receivable, less allowances for doubtful receivables of $323 and $470, respectively	3,752	4,040
Costs and estimated earnings in excess of billings on uncompleted contracts	1,966	1,456
Inventories, net	3,971	3,624
Prepaid expenses and deposits	401	720
Total current assets	13,206	16,500
Property, plant and equipment, net	7,872	8,303
Goodwill	635	635
Definite-lived intangible assets, net	182	224
Other assets	2,232	1,828
Total assets	24,127	27,490
Current liabilities:
Accounts payable	1,038	1,490
Accrued liabilities	1,481	1,749
Billings in excess of costs and estimated earnings on uncompleted contracts	2,283	3,438
Customer deposits	3,470	2,834
Current portion of retirement obligations	519	560
Current portion of long-term debt	164	155
Total current liabilities	8,955	10,226
Pension and retirement obligations, net of current portion	32,366	32,513
Long-term debt, net of current portion	5,145	5,136
Deferred rent obligation	1,502	1,480
Total liabilities	47,968	49,355
Commitments and contingencies
Stockholders' deficit:
Common stock, $0.20 par value: 30,000,000 shares authorized; 11,441,666 shares issued	2,288	2,288
Additional paid-in capital	54,458	54,433
Common stock in treasury, at cost: 352,467 shares	(4,709)	(4,709)
Accumulated deficit	(48,941)	(46,746)
Accumulated other comprehensive loss	(26,937)	(27,131)
Total stockholders' deficit	(23,841)	(21,865)
Total liabilities and stockholders' deficit	$ 24,127	$ 27,490