CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Jun. 30, 2020
CURRENT ASSETS
Cash	$ 41,162	$ 27,767
Accounts receivable, net	9,847	9,738
Inventory	7,272	6,114
Contract asset	27	20
Prepaid and other current assets	1,756	1,459
TOTAL CURRENT ASSETS	60,064	45,098
PROPERTY, PLANT AND EQUIPMENT, net	10,508	10,843
OPERATING LEASE RIGHT OF USE ASSET	7,919	8,353
FINANCING LEASE RIGHT OF USE ASSET, net	934	907
INVENTORY, net of current portion	982	989
OTHER ASSETS	118	110
GOODWILL	6,735	6,735
INTANGIBLE ASSETS, net	2,109	2,239
DEFERRED TAX ASSET, net	584	157
TOTAL ASSETS	89,953	75,431
CURRENT LIABILITIES
Accounts payable	2,972	2,922
Accrued liabilities	4,472	3,940
Operating lease liability	2,240	2,368
Financing lease liability	174	160
Current maturities of long-term debt	622	735
Contract liability	5,965	7,028
TOTAL CURRENT LIABILITIES	16,445	17,153
CONTRACT LIABILITY, net of current portion	1,352	1,461
OPERATING LEASE LIABILITY, net of current portion	5,810	6,118
FINANCING LEASE LIABILITY, net of current portion	772	741
OTHER LIABILITIES	44	45
LONG-TERM DEBT, net of current portion	3,236	3,329
TOTAL LIABILITIES	27,659	28,847
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY
Common stock, $0.01 par value per share; 40,000,000 shares authorized; 19,524,859 and 17,454,859 shares issued, respectively and 19,229,244 and 17,159,244 shares outstanding, respectively	197	176
Treasury stock, at cost, 295,615 shares repurchased	(1,554)	(1,554)
Additional paid-in capital	51,363	34,333
Retained earnings	12,288	13,629
TOTAL STOCKHOLDERS' EQUITY	62,294	46,584	$ 29,672	$ 29,578
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 89,953	$ 75,431