CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) (USD $)	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Cash flows from operating activities:
Net (loss) income	$ (1,176,000)	$ 1,441,000
Adjustments to reconcile net (loss) income to net cash used in operating activities:
Share-based compensation expense	152,000	80,000
Bond premium amortization	1,000	0
Depreciation and amortization	141,000	134,000
Loss on disposal of property and equipment	0	4,000
Gain on sale of marketable securities	0	(45,000)
Deferred income	0	(43,000)
Changes in operating assets and liabilities:
Accounts receivable.	960,000	(1,470,000)
Inventories	(2,055,000)	(1,545,000)
Costs and estimated earnings in excess of billings on uncompleted contracts	(43,000)	(490,000)
Other current assets	66,000	183,000
Other assets	4,000	4,000
Accounts payable	34,000	360,000
Accrued expenses	(286,000)	(88,000)
Income taxes payable	(30,000)	9,000
Customer advances	0	(51,000)
Liability associated with non-renewal of senior officers' contracts	701,000	(721,000)
Net cash used in operating activities	(1,531,000)	(2,238,000)
Cash flows from investing activities:
Purchase of property and equipment	(281,000)	(93,000)
Sale and disposal of property and equipment	0	10,000
Purchase of marketable securities	0	(258,000)
Sale of marketable securities	0	156,000
Net cash used in investing activities	(281,000)	(185,000)
Cash flows from financing activities:
Purchase of treasury stock	(402,000)	0
Proceeds from issuance of long-term debt	65,000	0
Proceeds from issuance of note payable-bank	1,407,000	971,000
Restricted cash	671,000	0
Stock option exercises	0	1,000
Repayments of long-term debt	(473,000)	(466,000)
Net cash provided by financing activities	1,268,000	506,000
NET DECREASE IN CASH AND CASH EQUIVALENTS	(544,000)	(1,917,000)
Cash and cash equivalents - Beginning of period	1,709,000	1,964,000
CASH AND CASH EQUIVALENTS - End of period	1,165,000	47,000
Supplemental cash flow information:
Cash paid for interest	72,000	106,000
Cash paid for income taxes	$ 92,000	$ 37,000