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Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Interest expense $ 221,398 $ 224,639 $ 224,483
Other expense 5,883 6,374 6,340
Earnings from equity method investments (77,349) (32,153) (94,905)
Reclassification out of Accumulated Other Comprehensive Income [Member]      
Interest expense 217 456 62
Other expense     3,634
Earnings from equity method investments $ 381 $ 465 $ 420