12. Employee Benefit Plans (Tables)

12 Months Ended

Apr. 30, 2019

Disclosure Text Block Supplement [Abstract]

Share-based Payment Arrangement, Option, Activity [Table Text Block]

The following table summarizes information about stock option and SARs activity for the years ended April 30, 2019 and 2018:

	Stock Options and Stock Appreciation Rights
						Weighted Average
				Weighted-		Remaining
				Average		Contractual	Aggregate
	Shares			Exercise Price		Term	Intrinsic Value
Outstanding – April 30, 2017		1,635,125		$	9.00	4.3 years
Granted		25,000			8.06
Exercised		(3,500	)		6.92		$	6,645
Expired or Canceled		(168,625	)		9.54
Outstanding – April 30, 2018		1,488,000		$	8.93	3.7 years	$	1,462,713
Granted		162,500			8.50
Exercised		(145,750	)		5.95			889,588
Expired or Canceled		(5,000	)		9.55
Outstanding – April 30, 2019		1,499,750		$	9.17	3.0 years	$	6,660,150
Exercisable		1,216,000		$	9.12	2.9 years	$	5,704,588
Available for future grants		81,966