CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($)	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities:
Net income	$ 4,369,055	$ 2,513,990
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	483,982	333,276
Debt issuance costs	44,317	42,785
Non-cash lease expense	(56,024)	(35,384)
Stock-based compensation	540,354	459,716
Common stock issued as employee compensation	32,324	45,913
Adjustment for maturity of interest rate swap		20,600
Deferred income taxes	(1,599,139)	755,500
Changes in operating assets and liabilities:
Decrease (increase) in accounts receivable	223,409	(10,724)
Increase in contract assets	(6,920,888)	(4,021,904)
Increase in inventory	(2,244,009)	(125,526)
Decrease in refundable income taxes	435,000
Decrease (increase) in prepaid expenses and other assets	645,522	(158,636)
Increase (decrease) in accounts payable and accrued expenses	1,007,265	(3,619,073)
(Decrease) increase in contract liabilities	(694,408)	337,250
Decrease in other liabilities		(10,976)
Increase (decrease) in income taxes payable	338,828	(109,327)
Net cash used in operating activities	(3,394,412)	(3,582,520)
Cash flows from investing activities:
Purchase of property and equipment	(314,462)	(369,738)
Net cash used in investing activities	(314,462)	(369,738)
Cash flows from financing activities:
Payments on long-term debt	(1,222,090)	(946,521)
Proceeds from line of credit	2,000,000	4,500,000
Payments on line of credit	(300,000)
Stock offering costs paid	(119,571)
Debt issue costs paid	(25,000)
Net cash provided by financing activities	333,339	3,553,479
Net decrease in cash and restricted cash	(3,375,535)	(398,779)
Cash and restricted cash at beginning of period	6,128,142	1,430,877
Cash and restricted cash at end of period	2,752,607	1,032,098
Cash paid during the period for:
Interest	1,329,678	1,047,457
Income taxes	141,702
Noncash investing and financing activities:
Equipment acquired under financing lease	$ 399,800	$ 497,602

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