Non-controlling Interest - Distributions Paid or Payable (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Dividends Payable [Line Items]
Distributions paid or payable to or on behalf of non-controlling unitholders	$ 14,094	$ 38,813
Tax and other discretionary distributions
Dividends Payable [Line Items]
Distributions paid or payable to or on behalf of non-controlling unitholders	8,442	5,560
Dividend Paid [Member]
Dividends Payable [Line Items]
Distributions paid or payable to or on behalf of non-controlling unitholders	$ 5,652	$ 33,253