Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities:
Net income	$ 2,814,218	$ 791,756
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation expense	556,593	370,830
Depreciation and amortization	636,236	590,385
Deferred tax expense/(benefit)	(331,750)	189,873
Provision for doubtful accounts	32,063	(84,182)
Changes in operating assets and liabilities:
Accounts receivable	1,376,880	(1,666,998)
Costs and estimated earnings in excess of billings on contracts in progress	(13,308)	(1,006,869)
Inventories, net	1,195,169	$ (716,201)
Income taxes - current	$ 511,158
Deposits		$ 3,167
Other current assets	$ 90,355	36,067
Accounts payable and accrued expenses	741,707	$ 1,663,191
Current maturities of long-term debt	(35,000)
Billings in excess of costs and estimated earnings on contracts in progress	(575,482)	$ 291,634
Accrued litigation settlement	(4,925,000)
Deferred revenue	(254,058)	$ 119,827
Net cash provided by operating activities	1,819,781	582,480
Cash flows from investing activities:
Release of restricted cash	200,000	400,000
Capital expenditures	(212,594)	(396,055)
Net cash (used in)/provided by investing activities	$ (12,594)	3,945
Cash flows from financing activities:
Net proceeds from stock options exercised		102,200
Payments of long-term debt	$ (505,000)	(540,000)
Net cash used in financing activities	(505,000)	(437,800)
Net increase in cash and cash equivalents	1,302,187	148,625
Cash and cash equivalents at beginning of period	11,966,863	11,247,560
Cash and cash equivalents at end of period	13,269,050	$ 11,396,185
Supplemental disclosure of cash flow information:
Income taxes paid	427,078
Interest paid	$ 70,907	$ 83,904