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Consolidated Statements of Shareholders' Equity (Parenthetical) $ in Thousands | 3 Months Ended
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Mar. 31, 2019 USD ($)
Change in fair value derivative instruments designated as cash flow hedges, income tax effect | $ (2,144)
Reclassification of realized loss on interest rate swap agreements designated as cash flow hedges, income tax effect | (606)
Other comprehensive income (loss), cumulative effect of new accounting principle in period of adoption, net of tax | 432
Accounting Standards Update 2017-12 [Member] |
Other comprehensive income (loss), cumulative effect of new accounting principle in period of adoption, net of tax | $ 277

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