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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:    
Net income $ 3,855 $ 5,821
Adjustments to reconcile net income to net cash used in operating activities:    
Depreciation and amortization 726 686
Unrealized (gain) loss on marketable equity investments 57 (1,371)
Gain on sale of investments (28) (1,327)
Impairment of long-lived assets 84
Non-cash lease expense 13 26
Loss on sale or disposal of equipment 35
Amortization of loan fees 9 49
Share-based compensation 1,275 901
Deferred income taxes (334) (181)
Bad debt expense (recovery) (2) 5
Changes in operating assets and liabilities:    
Accounts receivable (4,449) (5,783)
Deferred costs (517) (38)
Inventory (4,241) (199)
Prepaid expenses and other assets (331) (314)
Accounts payable and accrued expenses 1,991 105
Deferred revenue 863 (50)
Income taxes payable 147 (408)
Net cash used in operating activities (847) (2,078)
CASH FLOWS FROM INVESTING ACTIVITIES:    
Purchases of equipment and improvements (1,638) (1,769)
Purchase of land and building (6,499)
Proceeds from sale of investments 770 4,596
Increase in intangibles (33) (38)
Purchase of investments (334)
Net cash used in investing activities (1,235) (3,710)
CASH FLOWS FROM FINANCING ACTIVITIES:    
Principal payments on notes payable (1,244) (351)
Borrowing from Minnesota Bank & Trust, net of loan origination fees 2,000 9,139
Repurchases of common stock (1,606) (5,537)
Payments of employee taxes on net issuance of common stock (259)
Proceeds from exercise of stock options and ESPP contributions 60 96
Net cash provided by (used in) financing activities (790) 3,088
Net decrease in cash and cash equivalents (2,872) (2,700)
Cash and cash equivalents, beginning of year 3,721 6,421
Cash and cash equivalents, end of year 849 3,721
Non-cash investing and financing activity:    
Cashless stock option exercise 45 4
Cash paid during the period for:    
Income taxes, net of refunds 1,565 1,767
Interest $ 463 $ 330