5. Benefit Plans (Tables)

12 Months Ended

Apr. 30, 2019

Schedule of stock option activity

	Stock Options			Grant Date Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (in years)		Aggregate Intrinsic Value (1)
Outstanding at May 1, 2018		3,597,738		$	8.74
Granted		973,614		$	5.00
Exercised		(371,327	)	$	3.45
Canceled or expired		(925,810	)	$	11.28
Outstanding at April 30, 2019		3,274,215		$	7.51		5.53	$	1,238
Vested and expected to vest		3,274,215		$	7.51		5.53	$	1,238
Exercisable at April 30, 2019		1,932,527		$	9.45		3.87	$	700

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⁽¹⁾ Aggregate intrinsic value represents the difference between the exercise price of an option and the closing market price of our common stock on April 30, 2019, which was $4.79 per share.

Schedule of RSU activity

	Shares			Weighted Average Grant Date Fair Value
Outstanding at May 1, 2018		–		$	–
Granted		217,200			4.28
Vested		–			–
Forfeited		(16,825	)		3.78
Outstanding at April 30, 2019		200,375		$	4.32

Share-based compensation expense

	Fiscal Year Ended April 30,
	2019		2018		2017
Cost of revenues	$	474	$	378	$	108
Selling, general and administrative expense		1,121		820		1,553
Discontinued operations		–		340		1,702
Total	$	1,595	$	1,538	$	3,363

Equity Option [Member]

Fair value valuation assumptions

	Fiscal Year Ended April 30,
	2019		2018		2017
Risk-free interest rate		2.81%		2.21%		1.32%
Expected life (in years)		5.57		6.19		6.12
Expected volatility		76.56%		110.43%		111.30%
Expected dividend yield		–		–		–

Employee Stock Purchase Plan [Member]

Fair value valuation assumptions

	Fiscal Year Ended April 30,
	2019		2018		2017
Risk-free interest rate		2.26%		1.10%		0.46%
Expected life (in years)		0.50		0.50		0.50
Expected volatility		71.10%		75.18%		105.27%
Expected dividend yield		–		–		–