Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Reconciliation of net loss to cash provided (absorbed) by operating activities
Net loss	$ (279,512)	$ (298,555)
Adjustments to reconcile net loss to net cash provided (absorbed) by operating activities:
Depreciation and amortization	333,931	312,066
Gain on disposal of fixed assets	(11,627)	(34,079)
Deferred taxes	(165,505)	(47,000)
(Increase) decrease in:
Accounts receivable - billed	(2,301,337)	748,418
Accounts receivable - unbilled	144,739	(164,166)
Inventories	(156,018)	410,994
Prepaid expenses and other assets	(92,405)	(276,288)
Prepaid income taxes	(31,805)	89,303
Increase (decrease) in:
Accounts payable - trade	680,725	(116,661)
Accrued expenses and other	193,304	(54,650)
Accrued compensation	146,904	0
Accrued income taxes payable	0	(302,263)
Customer deposits	580,235	(203,881)
Net cash provided (absorbed) by operating activities	(958,371)	63,238
Cash flows from investing activities:
Purchases of investment securities available-for-sale	(17,943)	(36,217)
Purchases of property and equipment	(506,893)	(217,599)
Proceeds from sale of fixed assets	15,421	35,619
Net cash absorbed by investing activities	(509,415)	(218,197)
Cash flows from financing activities:
Proceeds from long-term borrowings	0	55,160
Repayments of long-term borrowings	(183,979)	(187,700)
Proceeds from options exercised	21,100	0
Net cash absorbed by financing activities	(162,879)	(132,540)
Net decrease in cash and cash equivalents	(1,630,665)	(287,499)
Cash and cash equivalents
Beginning of period	3,572,405	3,136,063
End of period	$ 1,941,740	$ 2,848,564