Product Development Assets

12 Months Ended

Apr. 30, 2018

Product Development Assets [Abstract]

Note 8 – Product Development Assets

Product development assets consisted of the following at April 30:

	2018		2017
Book Composition Costs	$	24,887	$	28,884
Other Product Development Costs		53,927		51,501
Total	$	78,814	$	80,385

Book composition costs are net of accumulated amortization of $188.7 million and $172.6 million as of April 30, 2018 and 2017, respectively. Other Product Development Costs are net of accumulated amortization of $49.4 million and $33.5 million as of April 30, 2018 and 2017, respectively.