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Income Taxes - Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Provision (benefit) for income taxes:
Federal-current	$ 703	$ 16,345	$ 52,944
Federal-deferred	(4,675)	(12,655)	(28,127)
State-current	918	3,440	6,096
State-deferred	627	(1,276)	(1,479)
Foreign-current	45,371	42,532	36,272
Foreign-deferred	(6,681)	(22,439)	(20,762)
Changes in income taxes resulting from:
Computed "expected" tax provision	75,161	75,637	51,325
Tax adjustment relating to REIT	(35,165)	(78,873)	(18,526)
Deferred tax adjustment and other taxes due to REIT conversion	0	0	247
State taxes (net of federal tax benefit)	1,599	2,692	3,796
Increase in valuation allowance (net operating losses)	3,568	(4,317)	7,660
Foreign repatriation	0	29,476	510
U.S Federal Rate Reduction	0	(4,685)	0
Reserve accrual (reversal) and audit settlements (net of federal tax benefit)	(13,985)	(9,103)	1,898
Foreign tax rate differential	5,545	(11,949)	(13,328)
Disallowed foreign interest, Subpart F income, and other foreign taxes	903	29,325	7,773
Other, net	(1,363)	(2,256)	3,589
Provision (Benefit) for Income Taxes	$ 36,263	$ 25,947	$ 44,944

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