CONDENSED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
OPERATING ACTIVITIES
Net Income	$ 695,109	$ 312,666
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	34,722	21,995
Deferred income taxes	235,000	194,000
Bad debt expense	84,592	131,454
Gain on sale of asset	0	(1,500)
Stock issued for services to non-employee	11,250	0
Stock compensation expense	22,032	0
Changes in operating assets and liabilities:
Accounts receivable	(198,588)	(1,284,134)
Inventory	(36,827)	350,035
Prepaid expenses and other assets	407,343	314,939
Accounts payable and accrued expenses	(396,368)	(229,888)
Payroll liabilities	27,508	73,976
Contract liabilities and customer deposits	(1,313,908)	442,469
Income taxes (receivable) payable	(128,000)	157,483
Net cash provided by (used in) operating activities	(556,135)	483,495
INVESTING ACTIVITIES
Capital expenditures	(20,615)	(38,875)
Proceeds from sale of asset	0	1,500
Net cash used in investing activities	(20,615)	(37,375)
FINANCING ACTIVITIES
Payments on notes payable	0	(7,737)
Repurchase of common stock	(112,240)	0
Net cash used in financing activities	(112,240)	(7,737)
NET INCREASE (DECREASE) IN CASH	(688,990)	438,383
CASH
Beginning of period	1,322,743	102,689
End of Period	633,753	541,072
Non-cash investing and financing activities:
Treasury stock cost related to compensation	52,474	0
Capital expenditure financed with note payable	$ 0	$ 32,435