Stockholders' (Deficit) Equity Dividends Declared on Common Stock or In Excess (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Dividends Payable [Line Items]
Dividends declared from retained earnings		$ (52,234)	$ (67,708)
Dividends declared from additional paid-in capital	$ (44,705)	(17,718)
Retained Earnings (Accumulated Deficit)
Dividends Payable [Line Items]
Dividends declared from retained earnings	0	(52,641)	(67,833)
Additional Paid-in Capital
Dividends Payable [Line Items]
Dividends declared from retained earnings		407	125
Dividends declared from additional paid-in capital	$ (44,705)	$ (17,718)	$ 0