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Consolidated Statements of Partners' Equity - USD ($)
shares in Thousands, $ in Thousands
Total
Limited Partners [Member]
General Partner [Member]
Special L.P. Interests [Member]
AOCI Attributable to Parent [Member]
Beginning balance, units (in shares) at Dec. 31, 2015   56,018      
Beginning balance, value at Dec. 31, 2015 $ 57,009 $ 48,428 $ 0 $ 5,290 $ 3,291
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income 177,688 177,686 2    
Partnership distribution declared (187,182) $ (187,180) (2)    
Issuance of limited partnership units related to compensation (in shares)   183      
Issuance of limited partnership units related to compensation 13,776 $ 13,776      
Tax effect of units involved in treasury unit transactions (422) $ (422)      
Foreign currency translation adjustment (3,700)       (3,700)
Cash flow hedging derivative activity 3,350       3,350
Ending balance, units (in shares) at Dec. 31, 2016   56,201      
Ending balance, value at Dec. 31, 2016 60,519 $ 52,288 0 5,290 2,941
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income 215,476 215,474 2    
Partnership distribution declared (194,756) $ (194,754) (2)    
Issuance of limited partnership units related to compensation (in shares)   158      
Issuance of limited partnership units related to compensation 13,021 $ 13,021      
Tax effect of units involved in treasury unit transactions (4,440) $ (4,440)      
Foreign currency translation adjustment (14,849)       (14,849)
Cash flow hedging derivative activity 7,975       7,975
Ending balance, units (in shares) at Dec. 31, 2017   56,359      
Ending balance, value at Dec. 31, 2017 82,946 $ 81,589 0 5,290 (3,933)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income 126,653 126,652 1    
Partnership distribution declared (203,199) $ (203,197) (2)    
Issuance of limited partnership units related to compensation (in shares)   205      
Issuance of limited partnership units related to compensation 2,940 $ 2,940      
Tax effect of units involved in treasury unit transactions (2,530) (2,530)      
Foreign currency translation adjustment 17,240       17,240
Cash flow hedging derivative activity 8,366       8,366
Reclassification of stranded tax effect 0 $ 391     (391)
Ending balance, units (in shares) at Dec. 31, 2018   56,564      
Ending balance, value at Dec. 31, 2018 $ 32,416 $ 5,845 $ (1) $ 5,290 $ 21,282