Intangibles (Tables)

12 Months Ended

Apr. 30, 2016

Goodwill and Intangible Assets Disclosure

Schedule of components of intangibles

	April 30,
	2016		2015
	(In thousands)
Licenses	$	818	$	818
Less accumulated amortization		(518)		(438)
Intangibles, net	$	300	$	380

Schedule of estimated amortization expense for the next five years

	Year ending
	April 30,
	(In thousands)
2017	$	80
2018		80
2019		80
2020		60
2021		—
	$	300