Consolidated Balance Sheets Statement (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Current assets
Cash and cash equivalents	$ 8,362	$ 4,758
Restricted cash	0	21
Accounts receivable – trade, net	2,594	3,464
Inventories, net	6,919	7,153
Deferred cost of goods sold	65	180
Deposits on equipment for inventory	389	609
Prepaid expenses and other current assets	819	757
Current assets of discontinued operations and assets held for sale	33	694
Total current assets	19,181	17,636
Property and equipment, net	1,216	1,354
Intangible and other assets, net	482	490
Available-for-sale investments, at quoted market value (cost of $2,232 and $2,204 at March 31, 2012 and December 31, 2011, respectively)	2,765	2,405
Restricted cash - long term	720	0
Deposit – related party	0	300
Non-current assets of discontinued operations and assets held for sale	0	1,993
Total assets	24,364	24,178
Current liabilities
Current portion of capital lease obligation	28	37
Revolving line of credit	1,157	1,157
Accounts payable	2,069	3,405
Accrued liabilities	3,609	3,451
Advances on contracts in progress	1,331	2,232
Liabilities of discontinued operations	218	1,654
Total current liabilities	8,412	11,936
Long-term portion of capital lease obligation	18	21
Deferred compensation	2,765	2,405
Other long-term liabilities	714	1,106
Total long-term liabilities	3,497	3,532
Total liabilities	11,909	15,468
Stockholders’ equity
Common stock, $0.01 par value; 20,000,000 shares authorized; 8,562,633 shares issued and outstanding on March 31, 2012 and December 31, 2011, respectively	86	86
Additional paid-in capital	22,558	22,510
Accumulated deficit	(10,722)	(14,087)
Accumulated other comprehensive income	533	201
Total stockholders’ equity	12,455	8,710
Total liabilities and stockholders’ equity	$ 24,364	$ 24,178