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Note 8 - Stockholders' Equity (Details Textual) - USD ($) $ in Thousands |  | 1 Months Ended | 3 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
May 31, 2019 | May 31, 2019 | Jun. 30, 2019 | Jun. 30, 2020 | Mar. 20, 2020 | May 16, 2019 | Jan. 12, 2016 | Jul. 28, 2015
Stock Repurchase Program, Authorized Amount |  |  |  |  |  |  | $ 70,000 | $ 15,000
Treasury Stock, Shares, Acquired (in shares) | 612,729 |  |  |  |  |  |  |
Treasury Stock, Value, Acquired, Cost Method |  | $ 6,700 | $ 6,682 |  |  |  |  |
Stock Repurchase Program, Remaining Authorized Repurchase Amount |  |  |  | $ 21,900 |  |  |  |
Equity Incentive Plan 2016 [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares) |  |  |  | 2,500,000 |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares) |  |  |  | 1,219,583 |  |  |  |
Director [Member] |  |  |  |  |  |  |  |
Common Stock, Percentage of Beneficial Stock Outstanding |  |  |  |  | 5.00% | 5.00% |  |
Broady Trust [Member] |  |  |  |  |  |  |  |
Stock Repurchase Program, Authorized Amount |  |  |  |  |  | $ 8,000 |  |
Open Market Purchases [Member] |  |  |  |  |  |  |  |
Stock Repurchase Program, Authorized Amount | $ 4,700 | $ 4,700 |  |  |  |  |  |

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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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