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Other Comprehensive Loss - Changes in Accumulated Other Comprehensive Loss by Component (Detail)
$ in Thousands
3 Months Ended
Mar. 31, 2019
USD ($)
Accumulated Other Comprehensive Income Loss [Line Items]  
Balance $ 2,073,002
Other comprehensive income before reclassifications 187
Change in cash flow hedges reclassed to earnings 117
Net current-period other comprehensive income 304
Balance 2,052,966
Gains and Losses on Cash Flow Hedges [Member]  
Accumulated Other Comprehensive Income Loss [Line Items]  
Balance (1,641)
Other comprehensive income before reclassifications 0
Change in cash flow hedges reclassed to earnings 117
Net current-period other comprehensive income 117
Balance (1,524)
Foreign Currency Items [Member]  
Accumulated Other Comprehensive Income Loss [Line Items]  
Balance 260
Other comprehensive income before reclassifications 187
Change in cash flow hedges reclassed to earnings 0
Net current-period other comprehensive income 187
Balance 447
Accumulated Other Comprehensive Loss [Member]  
Accumulated Other Comprehensive Income Loss [Line Items]  
Balance (1,381)
Balance $ (1,077)