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Income Taxes and Distributions (Details 2) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Reconciliation of Income Tax Expense      
Tax at statutory rate on earnings from continuing operations before unconsolidated entities, noncontrolling interests and income taxes $ 313,250 $ 178,862 $ 51,020
Change in valuation allowance [1] 13,759 9,133 18,444
Tax at statutory rate on earnings not subject to federal income taxes (319,832) (189,070) (88,762)
Foreign Permanent Depreciation 7,500 4,383 22,313
Other differences (8,226) (4,575) 4,476
Income tax (expense) benefit $ 6,451 $ (1,267) $ 7,491
[1] Excluding purchase price accounting.