CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Oct. 31, 2011	Apr. 30, 2011
CURRENT ASSETS:
Cash	$ 7,435,089	$ 8,475,525
Accounts receivable (net of allowance for doubtful accounts of $73,886 at October 31, 2011 and $146,502 at April 30, 2011)	2,179,251	2,127,865
Inventories - (net of obsolete of $1,244,216 at January 31, 2011 and April 30, 2010)
Raw materials	5,685,656	5,202,476
Work in process	930,097	1,088,235
Finished goods	718,291	723,972
Total inventory	7,334,044	7,014,683
Prepaid expenses and other current assets	1,340,808	964,117
Total current assets	18,289,192	18,582,190
PROPERTY, PLANT AND EQUIPMENT:
Land and building	3,976,853	3,142,486
Aircraft	6,131,859	5,951,859
Machinery and equipment	3,687,588	3,497,763
Office furniture and fixtures	1,031,132	1,024,612
Leasehold improvements	31,389	31,389
Property, plant and equipment, gross	14,858,821	13,648,109
Accumulated depreciation	(5,646,934)	(4,769,307)
Property, plant and equipment, net	9,211,887	8,878,802
SUPPLEMENTAL TYPE CERTIFICATES (net of amortization of $2,507,769 at October 31, 2011 and $2,464,183 at April 30, 2011)	1,652,616	1,696,202
OTHER ASSETS:
Deferred tax asset	1,226,000	1,226,000
Other assets (net of accumulated amortization of $351,382 at October 31, 2011 and $292,465 at April 30, 2011)	1,715,583	1,774,500
Total other assets	2,941,583	3,000,500
Total Assets	32,095,278	32,157,694
CURRENT LIABILITIES:
Line of Credit	207,246	91,799
Current maturities of long-term debt and capital lease obligations	1,554,815	1,807,490
Accounts payable	2,352,492	2,093,992
Customer deposits	670,275	1,091,043
Gaming facility mandated payment	1,362,059	2,028,015
Compensation and compensated absences	964,531	1,605,283
Accrued income tax	4,878	252,623
Other	264,892	221,584
Total current liabilities	7,381,188	9,191,829
LONG-TERM DEBT AND CAPITAL LEASE OBLIGATIONS, NET OF CURRENT MATURITIES:	4,946,325	4,940,402
Total liabilities	12,327,513	14,132,231
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY:
Common stock, par value $.01:Authorized 100,000,000 shares issued and outstanding 57,194,262 shares at October 31, 2011 and April 30, 2011	571,943	571,943
Common stock, owed but not issued 278,573 shares at October 31, 2011 and at April 30, 2011	2,786	2,786
Capital contributed in excess of par	12,167,812	11,911,838
Treasury stock at cost, 600,000 shares	(732,000)	(732,000)
Minority Interest - BHCMC, LLC	919,536	(396)
Retained earnings	6,837,688	6,271,292
Total stockholders' equity	19,767,765	18,025,463
Total liabilities and stockholders' equity	32,095,278	32,157,694
Class A [Member]
STOCKHOLDERS' EQUITY:
Preferred stock	0	0
Class B [Member]
STOCKHOLDERS' EQUITY:
Preferred stock	$ 0	$ 0