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Other Comprehensive Income (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |  |
Balance, at beginning of year | $ (5,620) |  | $ (6,000) |  |
Net unrealized gains (losses) arising during the period | 5,210 |  | (260) |  |
Less: Net realized gains reclassified to net income | (640) |  | (640) |  |
Total other comprehensive income | 5,850 |  | 380 |  | $ 12,120
Balance, at end of year | 230 |  | (5,620) |  | (6,000)
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, Tax | 800 |  | 400 |  |
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, Tax | 200 |  | 200 |  |
Cross Currency Interest Rate Contract [Member] |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |  |
Other Comprehensive Income (Loss), Tax | (3,100) |  | (2,500) |  |
Other Comprehensive Income (Loss), Tax | 3,100 |  | 2,500 |  |
Defined Benefit Plans |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |  |
Balance, at beginning of year | (8,620) |  | (9,930) |  |
Net unrealized gains (losses) arising during the period | 3,150 | [1] | 670 | [2] |
Less: Net realized gains reclassified to net income | (640) | [3] | (640) | [4] |
Total other comprehensive income | 3,790 |  | 1,310 |  |
Balance, at end of year | (4,830) |  | (8,620) |  | (9,930)
Derivative Instruments |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |  |
Balance, at beginning of year | (3,580) |  | 4,230 |  |
Net unrealized gains (losses) arising during the period | 9,490 | [1] | (7,810) | [2] |
Less: Net realized gains reclassified to net income | 0 |  | 0 |  |
Total other comprehensive income | 9,490 |  | (7,810) |  |
Balance, at end of year | 5,910 |  | (3,580) |  | 4,230
Foreign Currency Translation |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |  |
Balance, at beginning of year | 6,580 |  | (300) |  |
Net unrealized gains (losses) arising during the period | (7,430) |  | 6,880 |  |
Less: Net realized gains reclassified to net income | 0 |  | 0 |  |
Total other comprehensive income | (7,430) |  | 6,880 |  |
Balance, at end of year | (850) |  | 6,580 |  | (300)
Accumulated Other Comprehensive Income (Loss) [Member] |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |  |
Total other comprehensive income | $ 5,850 |  | $ 380 |  | $ 12,120
[1] | Defined benefit plans, net of income tax of $0.8 million. See Note 18, "Employee Benefit Plans," for additional details. Derivative instruments, net of income tax of $3.1 million. See Note 14, "Derivative Instruments," for further details.
[2] | Defined benefit plans, net of income tax of $0.4 million. See Note 18, "Employee Benefit Plans," for additional details. Derivative instruments, net of income tax expense of $2.5 million. See Note 14, "Derivative Instruments," for further details.
[3] | Defined benefit plans, net of income tax of $0.2 million. See Note 18, "Employee Benefit Plans," for additional details
[4] | Defined benefit plans, net of income tax of $0.2 million. See Note 18, "Employee Benefit Plans," for additional details.

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