Note 9 - Other Income (Expense), Net - Interest and Other Income Components (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Interest income | $ 14,369 | $ 11,637 | $ 9,327 |
| Amortization of premium on available-for-sale securities | (4,375) | (4,674) | (2,979) |
| Gain (loss) on deferred compensation plan investments | (6,600) | 4,563 | 4,592 |
| Foreign currency exchange gain (loss) | 454 | (727) | (1,364) |
| Charitable contributions | (5,900) | (1,500) | (766) |
| Other | 204 | 503 | 1,650 |
| Total | $ (1,848) | $ 9,802 | $ 10,460 |
| X | ||||||||||
- Definition Represents gain (loss) on contribution. No definition available.
|
| X | ||||||||||
- Definition Gains or losses on deferred compensation plan investments. No definition available.
|
| X | ||||||||||
- Definition The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The net amount of nonoperating interest income (expense). No definition available.
|
| X | ||||||||||
- Definition The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of income (expense) related to nonoperating activities, classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|