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Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Beginning Balance | $ 93,932 | $ 84,426
Other comprehensive loss before reclassifications | 0 | (2,578)
Amounts reclassified from accumulated other comprehensive income (loss) | (81) | 42
Income tax benefit | 17 | 555
Ending Balance | 97,595 | 90,722
Derivative Hedging Activities |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Beginning Balance | 0 | (191)
Other comprehensive loss before reclassifications | 0 | (2,578)
Amounts reclassified from accumulated other comprehensive income (loss) | 0 | 121
Income tax benefit | 0 | 538
Ending Balance | 0 | (2,110)
Post Retirement Benefit Plan Items |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Beginning Balance | 1,375 | 1,561
Other comprehensive loss before reclassifications | 0 | 0
Amounts reclassified from accumulated other comprehensive income (loss) | (81) | (79)
Income tax benefit | 17 | 17
Ending Balance | 1,311 | 1,499
Accumulated Other Comprehensive Income (Loss) |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Beginning Balance | 1,375 | 1,370
Ending Balance | $ 1,311 | $ (611)

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