CONSOLIDATED STATEMENTS OF CASH FLOWS - Scenario, Unspecified [Domain] - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2015	Apr. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss from continuing operations	$ (3,584)	$ (647)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Impairment of assets	2,580	686
Depreciation and amortization	3,264	3,190
Non-cash credits and charges:
Provision for doubtful accounts	42	416
Stock-based compensation	122	47
Loss on disposal of assets	0	58
Changes in assets and liabilities:
Receivables	(351)	1,363
Real estate inventory and investment assets	3,660	2,574
Intangible and other assets	628	926
Accounts payable and accrued expenses	(2,155)	173
Taxes receivable and payable	662	(10)
Deferred income taxes and other long-term liabilities	3,858	(678)
Accrued pension costs	1,236	(2,603)
Total adjustments	13,546	6,142
Net cash provided by operating activities	9,962	5,495
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures - property, plant and equipment	(1,127)	(1,259)
Net cash used in investing activities	(1,127)	(1,259)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of common stock, net	0	7,144
Principal debt payments	(1,455)	(814)
Net advances to discontinued operations	(2,901)	(5,562)
Net cash provided by (used in) financing activities	(4,356)	768
Increase in cash and cash equivalents	4,479	5,004
Cash and cash equivalents, beginning of year	7,571	2,567
Cash and cash equivalents, end of year	12,050	7,571
SUPPLEMENTAL CASH FLOW INFORMATION:
Interest paid	1,611	1,790
Income taxes paid (refunded), net	194	(37)
Non-cash transactions:
Issuance of common stock in settlement	$ 4,274	$ 0