Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash flows from operating activities
Net income	$ 2,020,455	$ 872,544
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	569,897	499,554
Gain on disposal of fixed assets	(20,296)	(15,693)
Deferred taxes	265,000	(243,000)
Changes in operating assets and liabilities:
Accounts receivable - billed		(6,105,717)
Accounts receivable - unbilled	(97,435)	139,017
Allowance for doubtful accounts		(59,977)
Inventories	(13,296)	(441,789)
Prepaid expenses and other assets	(110,709)	(123,949)
Prepaid income taxes	355,597	655,727
Accounts payable - trade	266,769	1,656,645
Accrued expenses and other	437,655	619,400
Accrued compensation	199,149	255,458
Customer deposits	195,799	736,128
Net cash provided by (used in) operating activities	885,712	(1,555,652)
Cash flows from investing activities:
Purchases of investment securities	(31,990)	(27,519)
Purchases of property and equipment	(3,289,669)	(864,814)
Proceeds from sale of fixed assets	20,296	23,731
Net cash used in investing activities	(3,301,363)	(868,602)
Cash flows from financing activities:
Line of credit borrowings	1,450,000	0
Line of credit payments	(1,450,000)	0
Proceeds from long-term borrowings	1,887,322	97,005
Repayments of long-term borrowings	(310,357)	(275,114)
Proceeds from options exercised	48,400	21,101
Net cash provided by (used in) financing activities	1,625,365	(157,008)
Net decrease in cash and cash equivalents	(790,286)	(2,581,262)
Cash and cash equivalents
Beginning of period	1,735,621	3,572,405
End of period	$ 945,335	$ 991,143