CONSOLIDATED STATEMENTS OF CASHFLOWS - USD ($)	12 Months Ended
	Apr. 30, 2015	Apr. 30, 2014
Cash flows from operating activities:
Net earnings (loss)	$ 120,000	$ 872,000
Adjustments to reconcile net earnings (loss) to net cash provided by (used in) operating activities:
Stock compensation cost amortized	35,000	34,000
Depreciation	339,000	359,000
Deferred tax expense	149,000	(145,000)
Change in value of stock appreciation rights	(250,000)	154,000
Increase (decrease) in cash flows from operations resulting from changes in:
Trade receivables	(83,000)	(157,000)
Inventories	(221,000)	(64,000)
Prepaid expenses and other assets	(40,000)	15,000
Trade accounts payable	257,000	64,000
Accrued liabilities	(4,000)	87,000
Customer deposits	(24,000)	(517,000)
Income taxes payable		22,000
Net cash provided by operating activities	278,000	724,000
Cash flows from investing activities:
Capital expenditures	(453,000)	(135,000)
Net cash provided by (used in) investing activities	(453,000)	(135,000)
Cash flows from financing activities:
Principal payments on long-term debt	(141,000)	(655,000)
Proceeds from long-term debt	172,000	542,000
Payments on capital lease obligations	(2,000)	(31,000)
Net cash used in financing activities	29,000	(144,000)
Net increase in cash	(146,000)	445,000
Cash, beginning of year	2,038,000	1,593,000
Cash, end of year	1,892,000	2,038,000
Cash paid during the year for:
Interest	28,000	34,000
Income taxes	$ 26,000	$ 10,000