Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Operating activities:
Net loss	$ (1,000)	$ (1,219)
Reconciliation of net loss to net cash used in operating activities:
Depreciation and amortization expense	686	638
Compensation costs - stock options	10	17
Deferred rental income	(22)	(23)
Provision for losses on accounts receivable	3	3
Change in operating assets and liabilities, net of effect of acquisition:
Accounts receivable	827	789
Inventories	(26)	(85)
Prepaid expenses	25	(18)
Refundable income taxes	18	(10)
Other assets	9	2
Accounts payable	(1,534)	(1,263)
Accrued payroll and other compensation	$ 21	(69)
Accrued income taxes		(8)
Other accrued taxes	$ (79)	(109)
Deferred revenues	399	322
Other liabilities and accrued expenses	96	(63)
Net cash used in operating activities	(567)	(1,096)
Investing activities:
Capital expenditures	(494)	(1,876)
Net cash used in investing activities	(494)	(1,876)
Financing activities:
Borrowings under line of credit facilities	510	1,200
Principal payments on capital lease obligations	(15)	(14)
Net cash provided by financing activities	495	1,186
Decrease in cash and cash equivalents	(566)	(1,786)
Cash and cash equivalents at beginning of period	1,814	4,329
Cash and cash equivalents at end of period	1,248	2,543
Supplemental disclosure of cash flow information:
Capital expenditures included in accounts payable	403	884
Cash paid during the period for interest	87	38
Cash paid during the period for income taxes	$ 5	$ 25