CONSOLIDATED STATEMENTS OF CASHFLOWS - USD ($)	6 Months Ended
	Oct. 31, 2015	Oct. 31, 2014
Cash flows from operating activities:
Net earnings	$ 295,000	$ (36,000)
Adjustments to reconcile net earnings to net cash used in operating activities:
Stock compensation cost amortized	17,000	12,000
Depreciation	189,000	165,000
Deferred income taxes	165,000	(23,000)
Termination and payout of stock appreciation rights		(250,000)
Increase (decrease) in cash flows from operations resulting from changes in:
Trade receivables	(220,000)	333,000
Inventories	(253,000)	(570,000)
Prepaid expenses and other assets	(32,000)	(87,000)
Trade accounts payable	(74,000)	195,000
Accrued liabilities	(255,000)	(279,000)
Customer deposits	(13,000)	(41,000)
Net cash used in operating activities	(181,000)	(581,000)
Cash flows from investing activities:
Capital expenditures	(279,000)	(288,000)
Net cash used in investing activities	(279,000)	(288,000)
Cash flows from financing activities:
Principal payments on long-term debt	(79,000)	(68,000)
Proceeds from long-term debt		100,000
Payments on capital lease obligations		(2,000)
Net cash provided by (used in) financing activities	(79,000)	30,000
Net decrease in cash	(539,000)	(839,000)
Cash, beginning of period	1,892,000	2,038,000
Cash, end of period	1,353,000	1,199,000
Cash paid during the year for:
Interest	13,000	14,000
Income taxes	$ 39,000	$ 19,000