Stockholders' Equity - Preferred Stock (Details) - shares	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Shares
Beginning balance (in shares)	0	14,369,965
Shares converted (in shares)	0	(14,369,965)
Ending balance (in shares)	0	0	14,369,965
Weighted Avg. Dividend Rate
Balance	0.00%	0.00%	0.00%	6.50%
Shares converted	0.00%	6.50%
Number of shares converted into common stock (in shares)		0.8857