Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities
Net income (loss)	$ 329,148	$ (279,512)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	381,011	333,931
Gain on disposal of fixed assets	(14,043)	(11,627)
Deferred taxes	341,000	(165,505)
Allowance for doubtful accounts	(30,801)	(95,261)
(Increase) decrease in operating assets and liabilities:
Accounts receivable - billed	(1,151,726)	(2,206,076)
Accounts receivable - unbilled	(438,838)	144,739
Inventories	(208,485)	(156,018)
Prepaid expenses and other assets	(114,703)	(92,405)
Prepaid income taxes	(158,370)	(31,805)
Increase (decrease) in:
Accounts payable - trade	753,620	680,725
Accrued expenses and other	35,426	193,304
Accrued compensation	409,184	146,904
Customer deposits	(337,767)	580,235
Net cash used in operating activities	(205,344)	(958,371)
Cash flows from investing activities:
Purchases of investment securities available-for-sale	(23,712)	(17,943)
Purchases of property and equipment	(1,260,659)	(506,893)
Proceeds from sale of fixed assets	14,043	15,421
Net cash used in investing activities	(1,270,328)	(509,415)
Cash flows from financing activities:
Proceeds from long-term borrowings	715,131	0
Repayments of long-term borrowings	(195,576)	(183,979)
Proceeds from options exercised	0	21,100
Net cash provided (used) in financing activities	519,555	(162,879)
Net decrease in cash and cash equivalents	(956,117)	(1,630,665)
Cash and cash equivalents
Beginning of period	1,735,621	$ 3,572,405
End of period	$ 779,504