Supplemental Information of Cash Flows (Tables)

12 Months Ended

May 31, 2020

Supplemental Cash Flow Elements [Abstract]

Schedule of Supplemental Information of Cash Flows

Supplemental information of cash flows for the years ended May 31, 2020 and 2019:

	2020		2019
Non-cash investing and financing activities:
Acquisition of equipment through financing leases	$	612,124	$	4,667,380
Acquisition of equipment in accounts payable	$	295,108	$	273,565
Preferred dividend accrual	$	84,110	$	112,192
Supplemental information:
Interest paid	$	1,696,444	$	1,786,882