Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Jan. 31, 2024	Apr. 30, 2023
CURRENT ASSETS:
Cash	$ 17,885	$ 21,997
Accounts receivable, net	6,140	3,793
Inventory, net	10,537	8,947
Contract asset	2,134	1,893
Prepaid expenses and other current assets	2,090	3,532
Total current assets	38,786	40,162
LEASE RIGHT-TO-USE ASSET, net	2,939	3,081
PROPERTY, PLANT AND EQUIPMENT, net	59,385	59,067
SUPPLEMENTAL TYPE CERTIFICATES (net of accumulated amortization of $11,509 at January 31, 2024 and $10,603 at April 30, 2023)	9,383	8,722
OTHER ASSETS:
Other assets (net of accumulated amortization of $12,831 at January 31, 2024 and $12,290 at April 30, 2023)	1,313	1,401
Deferred tax asset, net	1,473	1,473
Total other assets	2,786	2,874
Total assets	113,279	113,906
CURRENT LIABILITIES:
Accounts payable	8,496	5,320
Current maturities of long-term debt	4,900	4,987
Current maturities of lease liability	63	145
Contract liability	5,673	6,031
Gaming facility mandated payment	1,435	1,730
Compensation and compensated absences	1,796	6,722
Income taxes payable	2,205	228
Other current liabilities	658	214
Total current liabilities	25,226	25,377
LONG-TERM LIABILITIES
Long-term debt, net of current maturities	34,785	38,418
Lease liability, net of current maturities	3,356	3,330
Total long-term liabilities	38,141	41,748
Total liabilities	63,367	67,125
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY:
Common stock, par value $.01: Authorized 100,000,000 shares, issued 79,721,211 shares, and outstanding 68,850,856 shares at January 31, 2024 and issued 80,871,211 shares, and outstanding 76,891,689 shares at April 30, 2023	797	808
Capital contributed in excess of par	13,791	13,647
Treasury stock at cost, 10,870,355 shares at January 31, 2024 and 3,979,522 shares at April 30, 2023	(7,192)	(2,138)
Retained earnings	42,516	34,464
Total stockholders' equity	49,912	46,781
Total liabilities and stockholders' equity	113,279	113,906
Preferred Class A [Member]
STOCKHOLDERS' EQUITY:
Preferred stock	0	0
Preferred Class B [Member]
STOCKHOLDERS' EQUITY:
Preferred stock	$ 0	$ 0