Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities:
Net income/(loss)	$ 3,676,787	$ (918,752)
Adjustments to reconcile net income/(loss) to net cash provided by operating activities:
Stock-based compensation expense	677,552	544,238
Depreciation and amortization	623,656	618,227
Deferred tax expense/(benefit)	559,123	(836,615)
Provision for doubtful accounts	3,724	39,313
Accounts receivable	(3,453,556)	(4,108,505)
Costs and estimated earnings in excess of billings on contracts in progress	(1,861,408)	1,475,190
Inventories	263,531	(64,328)
Other current assets	(195,073)	(22,669)
Increases/(decreases) in operating liabilities:
Accounts payable and accrued expenses	665,119	(2,251,405)
Current maturities of long-term debt		(280,000)
Billings in excess of costs and estimated earningson contracts in progress	(5,046,437)	9,130,870
Deferred revenue	420,965	(158,031)
Total adjustments	(7,342,804)	4,086,285
Net cash (used in)/provided by operating activities	(3,666,017)	3,167,533
Cash flows from investing activities:
Release of restricted cash		200,000
Capital expenditures	(618,505)	(42,670)
Deposits	(9,127)	1,550
Net cash (used in)/provided by investing activities	(627,632)	158,880
Cash flows from financing activities:
Net proceeds from stock options exercised	22,120	462,000
Payments of long-term debt	(225,000)	(225,000)
Net cash (used in)/provided by financing activities	(202,880)	237,000
Net (decrease)/increase in cash and cash equivalents	(4,496,529)	3,563,413
Cash and cash equivalents at beginning of period	21,677,186	13,073,331
Cash and cash equivalents at end of period	17,180,657	16,636,744
Supplemental disclosure of cash flow information:
Income taxes paid	701,800	101,352
Interest paid	$ 52,433	$ 61,608