Condensed Consolidated Statements of Cash Flows - USD ($)	9 Months Ended
	Jan. 31, 2019	Jan. 31, 2018
Cash flows from operating activities:
Net income	$ 366,532	$ 956,305
Adjustments to reconcile net income to net cash provided by operating activities:
Income (loss) from discontinued operations	106,862	(235,248)
Depreciation and amortization	357,193	761,111
Stock compensation	35,553	79,739
Amortization of deferred loan issuance costs	104,760	72,959
Change in deferred rent	(42,958)	6,076
Change in swap fair value	60,872	(133,444)
(Gain) loss on disposal of assets	(34,356)	5,773
Changes in deferred income taxes	100,032	718,496
Changes in operating assets and liabilities:
Receivables and other assets	112,942	(15,338)
Accounts payable and accrued liabilities	109,987	(387,653)
Net cash provided by operating activities	1,277,419	1,828,776
Cash flows from investing activities:
Collections on notes receivable	0	347,888
Purchase of property and equipment	(171,300)	(640,444)
(Contribution to) distribution from discontinued operations	(61,669)	1,320,328
Deposit refunded	0	(3,500)
Proceeds from the sale of assets	13,143,373	2,000
Net cash provided by investing activities	12,910,404	1,026,272
Cash flows from financing activities:
Purchase of treasury stock	0	(1,700,291)
Repayment of credit facilities	(8,000,000)	(3,700,000)
Proceeds from credit facilities	0	700,000
Interest rate swap termination	73,800	0
Stock issuance proceeds, net of issuance costss	2,154,744	0
Cash proceeds from exercise of stock options	0	14,350
Net cash used in financing activities	(5,771,456)	(4,685,941)
Cash flows from discontinued operations:
Cash flows provided by operating activities	136,993	1,301,905
Cash flows used in investing activities	(186,643)	(119,417)
Cash flows provided by (used in) financing activities	61,669	(1,320,328)
Net cash provided by (used in) discontinued operations	12,019	(137,840)
Net increase (decrease) in cash, cash equivalents and restricted cash	8,428,386	(1,968,733)
Cash, cash equivalents and restricted cash at beginning of period	11,877,994	12,626,215
Cash, cash equivalents and restricted cash at end of period	20,306,380	10,657,482
Supplemental cash flow information:
Cash paid for interest	$ 186,549	$ 401,350