Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Operating activities:
Net income (loss)	$ 730,000	$ (32,000)
Reconciliation of income (loss) to cash provided by operating activities:
Depreciation and amortization	1,217,000	1,226,000
Compensation costs – stock options	96,000	206,000
Provision for losses on accounts receivable	15,000	54,000
Gain from disposal of property and equipment	(20,000)	(4,000)
Change in operating assets and liabilities:
Accounts receivable	(2,053,000)	2,941,000
Prepaid expenses	(50,000)	(57,000)
Other current assets	(119,000)	(112,000)
Other assets, net	(4,000)	(13,000)
Accounts payable	957,000	(3,591,000)
Accrued payroll and other compensation	318,000	(93,000)
Accrued income taxes	32,000	(17,000)
Other accrued taxes	(75,000)	(52,000)
Deferred revenues	442,000	381,000
Other liabilities and accrued expenses	77,000	(16,000)
Net cash provided by operating activities	1,563,000	821,000
Investing activities:
Capital expenditures	(820,000)	(1,309,000)
Proceeds from disposal of property and equipment	20,000	40,000
Net cash used in investing activities	(800,000)	(1,269,000)
Financing activities:
Principal payments on capital lease obligations	(40,000)
Contribution to paid-in capital	7,000
Net cash used in financing activities	(33,000)
Increase (decrease) in cash and cash equivalents	730,000	(448,000)
Cash and cash equivalents at beginning of year	7,888,000	7,324,000
Cash and cash equivalents at end of period	8,618,000	6,876,000
Significant non-cash investing activities and financing activities:
Capital lease obligations incurred	$ 280,000