Amount of the cost of borrowed funds accounted for as interest expense.

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Stockholders' Equity - Bryanston Settlement Agreement (Details) - USD ($) $ in Thousands		12 Months Ended
	Mar. 07, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Class of Stock [Line Items]
Interest expense		$ 49,835	$ 19,269	$ 524
Series E
Class of Stock [Line Items]
Payments for Repurchase of Private Placement	$ 30,700