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Fair Value Measurement Amounts Recorded In and Reclassified From AOCI (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 264,865 | $ 233,590 | $ 238,263 | $ 218,378 | $ 242,444 | $ 202,307 | $ 212,820 | $ 202,064 | $ 955,097 | $ 859,634 | $ 796,392
Cost of sales |  |  |  |  |  |  |  |  | 430,382 | 390,524 | 365,351
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax |  |  |  |  |  |  |  |  | 3,871 | 10,073 | (7,290)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax |  |  |  |  |  |  |  |  | 935 | 2,434 | (1,761)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax |  |  |  |  |  |  |  |  | 2,936 | 7,639 | (5,529)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax |  |  |  |  |  |  |  |  | 8,607 | (913) | (718)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax |  |  |  |  |  |  |  |  | 2,079 | (221) | (265)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax |  |  |  |  |  |  |  |  | 6,528 | (692) | (453)
Revenues [Member] |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax |  |  |  |  |  |  |  |  | 7,969 | (1,278) | (573)
Cost of Sales [Member] |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax |  |  |  |  |  |  |  |  | $ 638 | $ 365 | $ (145)

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