Consolidated Statements of Cash Flows (USD $)	3 Months Ended
	Jul. 31, 2012	Jul. 31, 2011
Cash flows from operating activities:
Net Income (Loss) Attributable to Parent	$ 84,000	$ (259,000)
Adjustments to reconcile net earnings (loss) to net cash provided by (used in) operating activities:
Stock compensation cost amortized	4,000	3,000
Depreciation	86,000	71,000
Deferred income taxes	56,000
Loss on Impairment	59,000	0
Change in value of stock appreciation rights	7,000	(11,000)
Trade receivables	(128,000)	915,000
Inventories	(110,000)	68,000
Prepaid expenses and other assets	(41,000)	(77,000)
Trade accounts payable	16,000	(135,000)
Accrued liabilities	(40,000)	(81,000)
Customer deposits	265,000	(233,000)
Income taxes payable	0	(8,000)
Net cash provided by (used in) operating activities	258,000	253,000
Cash flows from investing activities:
Capital expenditures	(101,000)	(72,000)
Net cash used in investing activities	(101,000)	(72,000)
Cash flows from financing activities:
Principal payments on long-term debt	(26,000)	(25,000)
Payments on capital lease obligations	(11,000)	(8,000)
Net cash provided by (used in) financing activities	(37,000)	(33,000)
Net increase (decrease) in cash	120,000	148,000
Cash, beginning of year	308,000	490,000
Cash, end of year	428,000	638,000
Interest	11,000	12,000
Income taxes	0	8,000
Capital expenditure	0	(41,000)
Proceeds from capital lease	$ 0	$ 41,000