Consolidated Condensed Statements of Cash Flows (Unadudited) - USD ($) $ in Thousands	3 Months Ended
	Jul. 31, 2017	Jul. 31, 2016
Cash flows from operating activities:
Net income	$ 2,215	$ 6,358
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	227	1,449
Non-voting revenues interest in EAM Trust	(1,978)	(1,787)
Non-voting profits interest in EAM Trust	(158)	(129)
Realized gain on sale of operating facility		(8,123)
Deferred income taxes	(216)	(174)
Deferred rent	259	(50)
Other, net	(15)	(15)
Changes in operating assets and liabilities:
Unearned revenue	(814)	(1,843)
Accounts payable & accrued expenses	(391)	(714)
Accrued salaries	94	70
Accrued taxes on income	1,367	3,185
Prepaid and refundable income taxes	2	75
Prepaid expenses and other current assets	275	(131)
Accounts receivable	(25)	(228)
Total adjustments	(1,373)	(8,415)
Net cash provided by (used in) operating activities	842	(2,057)
Cash flows from investing activities:
Purchases of fixed income securities classified as available-for-sale	(2,386)
Proceeds from sales of fixed income securities classified as available-for-sale	1,394
Distributions received from EAM Trust	1,920	1,750
Proceeds from sale of operating facility		11,555
Acquisition of property and equipment	(230)	(515)
Expenditures for capitalized software		(266)
Net cash provided by investing activities	698	12,524
Cash flows from financing activities:
Purchase of treasury stock at cost	(40)	(535)
Dividends paid	(1,748)	(1,659)
Net cash used in financing activities	(1,788)	(2,194)
Net change in cash and cash equivalents	(248)	8,273
Cash and cash equivalents at beginning of period	6,557	13,122
Cash and cash equivalents at end of period	$ 6,309	$ 21,395