Consolidated Statements of Cash Flows (USD $)	9 Months Ended
	Jan. 31, 2013	Jan. 31, 2012
Cash flows from operating activities:
Net Income (Loss) Attributable to Parent	$ 447,000	$ (101,000)
Adjustments to reconcile net earnings (loss) to net cash provided by (used in) operating activities:
Stock compensation cost amortized	(34,000)	(109,000)
Depreciation	250,000	226,000
Deferred income taxes	298,000	0
Loss on Impairment	105,000	0
Change in value of stock appreciation rights	72,000	(5,000)
Trade receivables	180,000	1,251,000
Inventories	(334,000)	139,000
Prepaid expenses and other assets	(50,000)	(41,000)
Trade accounts payable	(240,000)	(77,000)
Accrued liabilities	180,000	(22,000)
Customer deposits	681,000	(472,000)
Income taxes payable	0	(8,000)
Net cash provided by (used in) operating activities	1,555,000	781,000
Cash flows from investing activities:
Capital expenditures	(230,000)	(421,000)
Net cash used in investing activities	(230,000)	(421,000)
Cash flows from financing activities:
Principal payments on long-term debt	(81,000)	(77,000)
Payments on capital lease obligations	(34,000)	(24,000)
Net cash provided by (used in) financing activities	(115,000)	(101,000)
Net increase (decrease) in cash	1,210,000	259,000
Cash, beginning of year	308,000	490,000
Cash, end of year	1,518,000	749,000
Interest	32,000	36,000
Income taxes	0	8,000
Capital expenditure	0	(41,000)
Proceeds from capital lease	$ 0	$ 41,000