Income (Loss) Per Share - Schedule of Excluded Weighted-Average Potential Common Shares from Calculations of Diluted Net Income (Loss) Per Common Shares (Details) - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Convertible Preferred Stock (as Converted to Common Stock)
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Common stock shares effect would be anti-dilutive	6,406,324
Unvested Restricted Share-Based Awards
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Common stock shares effect would be anti-dilutive	115,089	8,000	500
Stock Options
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Common stock shares effect would be anti-dilutive	24,205