CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net income (loss)	$ 1,743	$ (1,275)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	294	291
Amortization of deferred pension costs	258	106
Pension settlement charge		3,620
Provision for excess and obsolete inventory	344	155
Other	196	166
Changes in operating assets and liabilities:
Decrease (increase) in restricted cash	(2)	110
Decrease (increase) in accounts receivable	1,533	(373)
Increase in lease receivable	(1,335)
Increase in inventories	(23)	(64)
Decrease (increase) in costs and estimated earnings in excess of billings on uncompleted contracts, net	2,162	(2,177)
Increase in prepaid expenses and other assets	(4)	(367)
Increase in accounts payable	96	352
Increase (decrease) in accrued liabilities	369	(111)
Decrease in accrued pension and retirement liabilities	(468)	(84)
Decrease in pension settlement obligation		(2,019)
Decrease in customer deposits	(994)	(849)
Decrease in deferred rent obligation	(422)	(424)
Net cash provided by (used in) operating activities	3,747	(2,943)
Cash flows from investing activities:
Purchases of property and equipment	(174)	(182)
Proceeds from sale of property and equipment		9
Net cash used in investing activities	(174)	(173)
Cash flows from financing activities:
Proceeds from shares issued on exercise of options	71
Principal payments on long-term debt	(199)	(188)
Principal payments on pension settlement obligation	(356)
Net cash used in financing activities	(484)	(188)
Net increase (decrease) in cash and cash equivalents	3,089	(3,304)
Cash and cash equivalents as of beginning of the year	3,734	7,038
Cash and cash equivalents as of end of the year	6,823	3,734
Supplemental disclosures of non-cash investing and financing activities
Settlement of pension liability		35,870
Increase in minimum pension and retirement obligations		661
Supplemental disclosures of cash flow information
Cash paid during the year for: Interest	516	364
Cash paid during the year for: Income taxes	$ 11	$ 12