Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities:
Net loss	$ (3,569,676)	$ (772,122)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities
Stock-based compensation	377,457	424,015
Depreciation and amortization	554,579	544,158
Deferred income tax (benefit)/expense	(698,000)	56,888
Provision for inventory obsolescence	50,000
(Increase)/decrease in operating assets
Accounts receivable	1,999,195	(663,864)
Contract assets	(296,670)	3,082,808
Inventories	(70,793)	317,604
Other current assets	213,399	(47,204)
Increase/(decrease) in operating liabilities
Accounts payable	436,684	52,290
Accrued expenses	227,209	(663,436)
Contract liabilities	(365,549)	(187,051)
Deferred revenue	22,778	815,639
Total adjustments	2,450,289	3,731,847
Net cash (used in) provided by operating activities	(1,119,387)	2,959,725
Cash flows from investing activities:
Capital expenditures	(1,434,682)	(1,273,857)
Other assets	22,835	(177,789)
Net cash used in investing activities	(1,411,847)	(1,451,646)
Cash flows from financing activities
Payments of long-term debt	(327,563)	(322,499)
Net cash used in financing activities	(327,563)	(322,499)
Net (decrease) increase in cash and cash equivalents	(2,858,797)	1,185,580
Cash and cash equivalents at beginning of period	11,439,361	14,210,909
Cash and cash equivalents at end of period	8,580,564	15,396,489
Supplemental disclosure of cash flow information:
Income taxes paid		395,000
Interest paid	240,806	242,324
Capitalization of right to use Asset	$ 128,947