CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Apr. 30, 2016	Apr. 30, 2015
Cash flows from operating activities:
Net earnings	$ 504,000	$ 120,000
Adjustments to reconcile net earnings to net cash provided by operating activities:
Stock compensation cost amortized (credited)	(65,000)	35,000
Depreciation	291,000	339,000
Deferred income taxes	244,000	149,000
Termination and payout of stock appreciation rights		(250,000)
Increase (decrease) in cash flows from operations resulting from changes in:
Trade receivables	(317,000)	(83,000)
Inventories	(27,000)	(221,000)
Prepaid expenses and other assets	(90,000)	(40,000)
Trade accounts payable	38,000	257,000
Accrued liabilities	(111,000)	(4,000)
Customer deposits	(38,000)	(24,000)
Net cash provided by operating activities	429,000	278,000
Cash flows from investing activities:
Capital expenditures	(324,000)	(453,000)
Purchase of investments	(28,000)
Net cash used in investing activities	(352,000)	(453,000)
Cash flows from financing activities:
Principal payments on long-term debt	(123,000)	(141,000)
Proceeds from long-term debt		172,000
Payments on capital lease obligations		(2,000)
Net cash (used in) provided by financing activities	(123,000)	29,000
Net decrease in cash	(46,000)	(146,000)
Cash, beginning of year	1,892,000	2,038,000
Cash, end of year	1,846,000	1,892,000
Cash paid during the year for:
Interest	25,000	28,000
Income taxes	$ 78,000	$ 26,000