Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current assets
Cash and Cash Equivalents	$ 3,030	$ 4,758
Restricted cash	0	21
Accounts receivable – trade, net	2,137	3,464
Inventories, net	5,316	7,153
Deferred cost of goods sold	185	180
Deposits on equipment for inventory	69	609
Prepaid expenses and other current assets	617	757
Current assets of discontinued operations	718	694
Total current assets	12,072	17,636
Property and equipment, net	1,197	1,354
Intangible and other assets, net	393	490
Available-for-sale investments, at quoted market value (cost of $2,250 and $2,204 at June 30, 2012 and December 31, 2011, respectively)	2,963	2,405
Deposit – related party	0	300
Non-current assets of discontinued operations	0	1,993
Total assets	16,625	24,178
Current liabilities
Current portion of capital lease obligation	13	37
Revolving line of credit	590	1,157
Accounts payable	1,424	3,405
Accrued liabilities	2,221	3,451
Advances on contracts in progress	1,037	2,232
Liabilities of discontinued operations	171	1,654
Total current liabilities	5,456	11,936
Long-term portion of capital lease obligation	8	21
Deferred compensation	2,963	2,405
Other long-term liabilities	746	891
Noncurrent liabilities of discontinued operations	0	215
Total long-term liabilities	3,717	3,532
Total liabilities	9,173	15,468
Stockholders’ equity
Common stock, $0.01 par value; 20,000,000 shares authorized; 8,562,633 shares issued and outstanding on June 30, 2012 and December 31, 2011, respectively	91	86
Additional paid-in capital	23,084	22,510
Accumulated deficit	(15,945)	(14,087)
Accumulated other comprehensive income	222	201
Total stockholders’ equity	7,452	8,710
Total liabilities and stockholders’ equity	$ 16,625	$ 24,178