SUPPLEMENTAL CASH FLOW INFORMATION

9 Months Ended

Sep. 30, 2018

SUPPLEMENTAL CASH FLOW INFORMATION [Abstract]

SUPPLEMENTAL CASH FLOW INFORMATION

11.SUPPLEMENTAL CASH FLOW INFORMATION

Supplemental cash flow information is as follows:

		Nine Months Ended
		September 30,
		2018		2017
Interest paid	$	140,427	$	292,961
Federal, state, and local income taxes (refund) paid, net	$	496,678	$	646,129
Change in contract receivables, net	$	(4,849,176)	$	-
Change in contract liabilities, net	$	4,849,176	$	-
Property, plant, and equipment purchases in accounts payable	$	119,604	$	284,370