Stockholders' Deficit Dividends Declared on Common Stock or In Excess (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Dividends Payable [Line Items]
Dividends declared from retained earnings	$ 12,208	$ 47,095
Dividends declared from additional paid-in capital			$ 44,705
(Accumulated Deficit) Retained Earnings
Dividends Payable [Line Items]
Dividends declared from retained earnings	12,715	48,077	0
Additional Paid-in Capital
Dividends Payable [Line Items]
Dividends declared from retained earnings	(507)	(982)
Dividends declared from additional paid-in capital	$ 0	$ 0	$ 44,705