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Note 5 - Revenue from Contracts with Customers (Tables) | 12 Months Ended
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Dec. 31, 2021
Notes Tables |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block] |
|  | (in thousands) |
2022 |  | $ | 142,812 |
2023 |  |  | 101,482 |
2024 |  |  | 36,361 |
2025 |  |  | 2,422 |
2026 |  |  | 499 |
2027 and thereafter |  |  | 110 |
Total |  | $ | 283,687 |
Disaggregation of Revenue [Table Text Block] |
|  | Year Ended December 31, |
|  | 2021 |  |  | 2020 |  |  |  | 2019 |
|  | (in thousands) |
Direct |  | $ | 242,709 |  |  | $ | 212,296 |  |  | $ | 186,130 |
Partner |  |  | 168,463 |  |  |  | 150,667 |  |  |  | 135,477 |
Total |  | $ | 411,172 |  |  | $ | 362,963 |  |  | $ | 321,607 |
Contract With Customer, Commission Asset Balances [Table Text Block] |
|  | December 31, |
|  | 2021 |  |  | 2020 |
|  | (in thousands) |
Current |  | $ | 4,223 |  |  | $ | 3,459 |
Noncurrent |  | $ | 8,391 |  |  | $ | 6,906 |

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