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Statements of Cash Flows - USD ($)
12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Cash Flows from Operating Activities    
Net income $ 2,305,000 $ 2,362,000
Adjustments to reconcile net income to net cash (used in) provided by operating activities:    
Depreciation 503,000 477,000
Amortization of finite-life intangible assets 125,000 133,000
Share-based compensation expense 976,000 1,024,000
Deferred income taxes (489,000) (294,000)
Changes in operating assets and liabilities:    
Accounts receivable (4,020,000) (4,091,000)
Contract assets 107,000 510,000
Inventories (1,072,000) 971,000
Prepaid expenses and other current assets (1,322,000) 151,000
Income tax payable (237,000) 550,000
Accounts payable and accrued liabilities 2,170,000 214,000
Accrued compensation 268,000 1,070,000
       Net cash (used in) provided by operating activities (686,000) 3,077,000
Cash Flows from Investing Activities    
Expenditures for property and equipment (1,425,000) (287,000)
Expenditures for finite-life intangible assets (100,000) (161,000)
Net cash used in investing activities (1,525,000) (448,000)
Cash Flows from Financing Activities    
Issuance of common stock upon exercise of options 46,000
Taxes paid on stock options exercised on a net basis (77,000) (141,000)
Repurchase of common stock (1,448,000) (1,124,000)
Net cash used in financing activities (1,525,000) (1,219,000)
Net (decrease) increase in cash (3,736,000) 1,410,000
Cash and cash equivalents    
Beginning of period 11,889,000 10,479,000
End of period 8,153,000 11,889,000
Supplemental Disclosures of Cash Flow Information    
   Cash paid for income taxes 1,418,000 534,000
Supplemental Disclosures of Noncash Investing and Financing Activities    
   Property and equipment acquisitions in accounts payable 44,000 10,000
   Intangible asset acquisitions in accounts payable 3,000 42,000
   Lease assets obtained in exchange for new operating lease liabilities $ 117,000 $ 91,000