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v3.23.1

Note 1 - Description of Business and Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2023 | Mar. 31, 2023 | Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2022 | Aug. 12, 2019
Accounts Receivable, Credit Loss Expense (Reversal) |  | $ 736 | $ 304 | $ 100 |  |
Expected Payments to Acquire Businesses, Net of Cash Acquired |  | 6,140 |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired |  | $ 4,950 | $ 300,793 | $ (0) |  |
Goodwill, Impairment Loss | $ 0 |  |  |  |  |
Equity Plan 2014 [Member] | Director [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) |  | 1 year |  |  |  |
The Notes [Member] | Senior Notes [Member] |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 1.375% | 1.375% |  |  | 1.375% | 1.375%
Minimum [Member] |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 5 years | 5 years |  |  |  |
Minimum [Member] | Equity Plan 2014 [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) |  | 3 years |  |  |  |
Minimum [Member] | Equity Plan 2014 [Member] | Share-Based Payment Arrangement, Option [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year) |  | 6 years |  |  |  |
Maximum [Member] |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 15 years | 15 years |  |  |  |
Maximum [Member] | Equity Plan 2014 [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) |  | 5 years |  |  |  |
Maximum [Member] | Equity Plan 2014 [Member] | Share-Based Payment Arrangement, Option [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year) |  | 10 years |  |  |  |

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