CONSOLIDATED STATEMENTS OF CASHFLOWS - USD ($)	3 Months Ended
	Jul. 31, 2015	Jul. 31, 2014
Cash flows from operating activities:
Net earnings	$ 61,000	$ (115,000)
Adjustments to reconcile net earnings to net cash used in operating activities:
Stock compensation cost amortized	8,000	4,000
Depreciation	93,000	82,000
Deferred income taxes	46,000	(72,000)
Termination and payout of stock appreciation rights		(250,000)
Increase (decrease) in cash flows from operations resulting from changes in:
Trade receivables	(216,000)	236,000
Inventories	(212,000)	(309,000)
Prepaid expenses and other assets	(55,000)	(64,000)
Trade accounts payable	124,000	142,000
Accrued liabilities	(111,000)	(215,000)
Customer deposits	19,000	(38,000)
Net cash used in operating activities	(243,000)	(599,000)
Cash flows from investing activities:
Capital expenditures	(178,000)	(159,000)
Net cash used in investing activities	(178,000)	(159,000)
Cash flows from financing activities:
Principal payments on long-term debt	(44,000)	(34,000)
Proceeds from long-term debt		100,000
Payments on capital lease obligations		(2,000)
Net cash provided by (used in) financing activities	(44,000)	64,000
Net decrease in cash	(465,000)	(694,000)
Cash, beginning of period	1,892,000	2,038,000
Cash, end of period	1,427,000	1,344,000
Cash paid during the year for:
Interest	6,000	7,000
Income taxes	$ 22,000	$ 19,000