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Note 11 - Stock-based Compensation | 6 Months Ended
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Mar. 31, 2023
Notes to Financial Statements |
Share-Based Payment Arrangement [Text Block] | 11. Stock-Based Compensation During the six months ended March 31, 2023, the Company issued 211,375 restricted stock units (“RSUs”) under its 2014 Long Term Incentive Plan, as amended. The RSUs issued include both time-based and performance-based vesting provisions. The weighted average grant date fair value of each RSU was $4.65 per unit. The grant date fair value of the RSUs was $1.0 million, which will be charged to expense over the next four years as the restrictions lapse. Compensation expense for the RSUs was determined based on the closing market price of the Company’s stock on the date of grant applied to the total number of units that are anticipated to fully vest. Each RSU represents a contingent right to receive one share of the Company’s common stock upon vesting. As of March 31, 2023, there were 394,924 RSUs outstanding. As of March 31, 2023, the Company had unrecognized compensation expense of $2.2 million relating to RSUs that is expected to be recognized over a weighted average period of 2.7 years.

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