Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities
Net income	$ 2,317,107	$ 2,020,455
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	694,497	569,897
Gain on disposal of fixed assets	(32,017)	(20,296)
Allowance for doubtful accounts	(118,881)	(33,017)
Stock compensation	289,596	0
Deferred taxes	(63,000)	265,000
(Increase) decrease in
Accounts receivable - billed	(3,460,732)	(3,149,856)
Accounts receivable - unbilled	76,068	(97,435)
Inventories	(418,502)	(13,296)
Prepaid expenses and other assets	(149,086)	(110,709)
Refundable income taxes	96,395	355,597
Accounts payable - trade	462,023	266,769
Accrued expenses and other liabilities	178,589	261,816
Deferred revenue	621,415	175,839
Accrued compensation	131,606	199,149
Customer deposits	1,050,546	195,799
Net cash provided by operating activities	1,675,624	885,712
Cash flows from investing activities:
Purchases of investment securities available-for-sale	(28,594)	(31,990)
Purchases of property and equipment	(2,568,788)	(3,289,669)
Proceeds from sale of fixed assets	37,369	20,296
Net cash used in investing activities	(2,560,013)	(3,301,363)
Cash flows from financing activities:
Line of credit borrowings	0	1,450,000
Line of credit payments	0	(1,450,000)
Proceeds from long-term borrowings	183,784	1,887,322
Repayments of long-term borrowings	(434,876)	(310,357)
Dividends paid on common stock	(49,414)	0
Proceeds from options exercised	116,778	48,400
Net cash (used in) provided by financing activities	(183,728)	1,625,365
Net decrease in cash and cash equivalents	(1,068,117)	(790,286)
Cash and cash equivalents
Beginning of period	3,522,620	1,735,621
End of period	$ 2,454,503	$ 945,335