CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities:
Net (loss) income	$ (2,454)	$ 2,137
Adjustments to reconcile net (loss) income to net cash used in operating activities:
Impairment of long-lived assets	2,156
Depreciation and amortization	1,773	1,890
Discontinuance of ERP system project		941
Share-based compensation	554	424
Provision (credit) for bad debts	1,134	(223)
Equity in net loss (income) of joint venture	179	(4,392)
Abandonment of patents	80
Forgiveness of debt	(10)
Gain on sales of property, plant and equipment	(198)	(331)
Changes in assets and liabilities:
Accounts receivable	(2,460)	(163)
Inventory		(9)
Costs and estimated earnings in excess of billings on uncompleted contracts	(2,463)	(84)
Prepaid expenses and other current assets	(59)	345
Other assets	34	(55)
Accounts payable and accrued liabilities	1,723	(3,492)
Deferred revenues	(216)	(55)
Billings in excess of costs and estimated earnings on uncompleted contracts	(1,014)	1,321
Net cash used in operating activities	(1,241)	(1,746)
Cash flows from investing activities:
Cash distribution received from joint venture		6,375
Proceeds from sale of property, plant and equipment	263	508
Payments received on notes receivable	55	16
Cash paid for patents	(35)	(7)
Cash paid for capitalized software		(79)
Cash paid for exclusive product rights	(125)
Cash paid for deposits	(166)
Purchases of property, plant and equipment	(1,519)	(2,014)
Net cash (used in) provided by investing activities	(1,527)	4,799
Cash flows from financing activities:
Proceeds from bank credit facility loans	1,170	800
Cash paid for purchase of our common stock	(48)	(818)
Principal payments on long-term debt	(1,810)	(1,786)
Net cash used in financing activities	(688)	(1,804)
(Decrease) increase in cash and cash equivalents	(3,456)	1,249
Cash and cash equivalents, beginning of year	4,979	3,730
Cash and cash equivalents, end of year	1,523	4,979
Supplemental schedule of operating, investing and financing activities:
Cash paid for interest	139	278
Prepaid insurance purchased on credit	385	340
Property, plant and equipment acquired via capital lease	1,200
Shares of common stock surrendered by employees related to payroll taxes on vested restricted stock awards	$ 40	$ 50