SUPPLEMENTAL CASH FLOW INFORMATION

3 Months Ended

Mar. 31, 2018

SUPPLEMENTAL CASH FLOW INFORMATION [Abstract]

SUPPLEMENTAL CASH FLOW INFORMATION

11.SUPPLEMENTAL CASH FLOW INFORMATION

Supplemental cash flow information is as follows:

		Three Months Ended
		March 31,
		2018		2017
Interest paid	$	46,065	$	99,546
Federal, state, and local income taxes (refund) paid, net	$	(14,675)	$	36,499
Change in contract receivables	$	(13,518,203)	$	-
Change in contract liabilities	$	13,518,203	$	-
Property, plant, and equipment purchases in accounts payable	$	90,045	$	108,345