CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities:
Net loss	$ (2,570,000)	$ (135,000)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Goodwill impairment	0	820,000
Share-based compensation expense	111,000	211,000
Depreciation and amortization	463,000	288,000
Bond premium amortization	10,000	2,000
Deferred tax expense	2,252,000	0
Gain on sale of marketable securities	(7,000)	(5,000)
Changes in operating assets and liabilities:
Decrease (increase) in accounts receivable	2,391,000	(431,000)
Decrease (increase) in inventories	1,468,000	(721,000)
Decrease (increase) in costs and estimated earnings in excess of billings on uncompleted contracts	875,000	(875,000)
Increase in other current assets	(12,000)	(2,000)
Decrease (increase) in other assets	90,000	(26,000)
(Decrease) increase in liability associated with non-renewal of senior officer contract	(662,000)	79,000
Decrease in accounts payable	(231,000)	(63,000)
(Decrease) increase in customer advances	(71,000)	73,000
Increase (decrease) in taxes payable	23,000	(28,000)
Decrease in accrued expenses	(145,000)	(141,000)
Net cash provided by (used in) operating activities	3,985,000	(954,000)
Cash flows from investing activities:
Purchase of marketable securities	(553,000)	(110,000)
Proceeds from sale of marketable securities	557,000	113,000
Purchase of property and equipment	(339,000)	(373,000)
Net cash used in investing activities	(335,000)	(370,000)
Cash flows from financing activities:
Restricted cash	0	671,000
Purchase of treasury stock	(433,000)	(785,000)
Repayments of long-term debt	(41,000)	(3,050,000)
(Repayments) proceeds of note payable-bank	(1,224,000)	3,324,000
Proceeds from issuance of long-term debt	0	65,000
Net cash provided by (used in) financing activities	(1,698,000)	225,000
Net increase (decrease) in cash and cash equivalents	1,952,000	(1,099,000)
Cash and cash equivalents at beginning of year	610,000	1,709,000
Cash and cash equivalents at end of year	2,562,000	610,000
Supplemental disclosure of cash flow information:
Cash paid during the year for interest	61,000	130,000
Cash paid during the year for income taxes	$ 32,000	$ 98,000