Stockholders' Equity - Preferred Stock (Details) - shares	Dec. 31, 2020	Dec. 31, 2019
Class of Stock
Preferred stock authorized (in shares)	5,000,000
Series A Preferred Stock
Class of Stock
Preferred stock authorized (in shares)	2,000,000
Preferred stock issued (in shares)		2,000,000
Preferred stock outstanding (in shares)	0	2,000,000