Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Oct. 31, 2012	Oct. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ (332)	$ 804
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Impairment of assets	169	0
Depreciation and amortization	1,868	2,703
Non-cash credits and charges:
Pension accrual	942	437
Provision for doubtful accounts	(153)	8
Loss on disposition of assets, net	21	67
Changes in assets and liabilities:
Receivables	(12,209)	4,127
Real estate inventory and investment assets	(105)	(75)
Intangible and other assets	19	(303)
Accounts payable and accrued expenses	(1,744)	256
Taxes receivable and payable	(587)	(591)
Deferred income taxes and other long-term liabilities	(452)	577
Accrued pension cost	(4,322)	(380)
Total adjustments	(16,553)	6,826
Net cash provided by (used in) operating activities	(16,885)	7,630
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures - property, plant and equipment	(292)	(697)
Proceeds from the disposition of assets	0	12
Net cash used in investing activities	(292)	(685)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from debt financing	8,836	7,704
Principal debt payments	(4,429)	(9,034)
Net cash provided by (used in) financing activities	4,407	(1,330)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(12,770)	5,615
CASH AND CASH EQUIVALENTS, beginning of period	27,847	25,756
CASH AND CASH EQUIVALENTS, end of period	15,077	31,371
SUPPLEMENTAL CASH FLOW INFORMATION:
Interest paid	599	694
Income taxes paid - net of refunds	$ 929	$ 132