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Shareholders' equity | 12 Months Ended
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Dec. 31, 2020
Equity [Abstract] |
Stockholders' Equity | Stockholders' Equity Stock Repurchases For the fiscal year ended December 31, 2020, the Company repurchased 1,053,314 shares of the Company’s common stock in the open market at an average price of $72.33 per share, for a total of $76.2 million. As of December 31, 2020, approximately $23.8 million was not used for repurchase under the previously announced $100.0 million share repurchase authorization (which expired at the end of 2020). On December 16, 2020, the Company’s Board of Directors authorized the Company to repurchase up to $100.0 million of the Company’s common stock from January 1, 2021 through December 31, 2021. As of December 31, 2020, the Company held 150,974 shares of its common stock as treasury shares and in 2020, retired a total of 1,028,328 of its common stock. Comprehensive Income or Loss The following shows the components of accumulated other comprehensive income or loss as of December 31, 2020 and 2019, respectively:
| Foreign Currency Translation |  | Pension Benefit |  | Derivative Instruments |  | Total
(in thousands) |  |  |
Balance at January 1, 2018 | $ | (10,054) |  |  | $ | (2,442) |  |  | $ | — |  |  | $ | (12,496) |
Other comprehensive gain/(loss), net of tax effect | (12,911) |  |  | 757 |  |  | — |  |  | (12,154) |
Balance at December 31, 2018 | (22,965) |  |  | (1,685) |  |  | — |  |  | (24,650) |
Other comprehensive gain/(loss), net of tax effect | 885 |  |  | (1,064) |  |  | — |  |  | (179) |
Balance at December 31, 2019 | (22,080) |  |  | (2,749) |  |  | — |  |  | (24,829) |
Other comprehensive gain/(loss), net of tax effect | 14,172 |  |  | (161) |  |  | 390 |  |  | 14,401 |
Balance at December 31, 2020 | $ | (7,908) |  |  | $ | (2,910) |  |  | $ | 390 |  |  | $ | (10,428) |

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- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 + Details
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