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v3.21.1

Consolidated Statements of Stockholders' Equity (unaudited) - USD ($) $ in Thousands | Common Stock [Member] | Additional Paid-in-Capital [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive (Loss) Income [Member] | Common Stock in Treasury [Member] | Total | Cumulative Effect Adjustment for ASU Implementation [Member] Common Stock [Member] | Cumulative Effect Adjustment for ASU Implementation [Member] Additional Paid-in-Capital [Member] | Cumulative Effect Adjustment for ASU Implementation [Member] Retained Earnings [Member] | Cumulative Effect Adjustment for ASU Implementation [Member] Accumulated Other Comprehensive (Loss) Income [Member] | Cumulative Effect Adjustment for ASU Implementation [Member] Common Stock in Treasury [Member] | Cumulative Effect Adjustment for ASU Implementation [Member]
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2019 | $ 497 | $ 576,708 | $ 696,214 | $ (19,026) | $ (133,996) | $ 1,120,397 |  |  |  |  |  |
Balance (ASU 2016-13 [Member]) at Dec. 31, 2019 |  |  |  |  |  |  | $ 0 | $ 0 | $ (4,339) | $ 0 | $ 0 | $ (4,339)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Net income | 0 | 0 | 10,368 | 0 | 0 | 10,368 |  |  |  |  |  |
Cash dividends | 0 | 0 | (23,632) | 0 | 0 | (23,632) |  |  |  |  |  |
Purchase of treasury shares | 0 | 0 | 0 | 0 | (7,980) | (7,980) |  |  |  |  |  |
Net issuance of shares to employee and other stock plans | 0 | (2,303) | 0 | 0 | 759 | (1,544) |  |  |  |  |  |
Stock-based compensation | 0 | 2,675 | 0 | 0 | 0 | 2,675 |  |  |  |  |  |
Other comprehensive income (loss) | 0 | 0 | 0 | 16,234 | 0 | 16,234 |  |  |  |  |  |
Balance at Mar. 31, 2020 | 497 | 577,080 | 678,611 | (2,792) | (141,217) | 1,112,179 |  |  |  |  |  |
Balance at Dec. 31, 2020 | 497 | 578,082 | 749,056 | 417 | (140,434) | 1,187,618 |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Net income | 0 | 0 | 39,846 | 0 | 0 | 39,846 |  |  |  |  |  |
Cash dividends | 0 | 0 | (11,732) | 0 | 0 | (11,732) |  |  |  |  |  |
Purchase of treasury shares | 0 | 0 | 0 | 0 | (9,020) | (9,020) |  |  |  |  |  |
Net issuance of shares to employee and other stock plans | 0 | (2,153) | 0 | 0 | 870 | (1,283) |  |  |  |  |  |
Stock-based compensation | 0 | 2,668 | 0 | 0 | 0 | 2,668 |  |  |  |  |  |
Other comprehensive income (loss) | 0 | 0 | 0 | (17,116) | 0 | (17,116) |  |  |  |  |  |
Balance at Mar. 31, 2021 | $ 497 | $ 578,597 | $ 777,170 | $ (16,699) | $ (148,584) | $ 1,190,981 |  |  |  |  |  |

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