Earnings Per Share of Common Stock EPS Calculation - Diluted (Details) - USD ($)	3 Months Ended																12 Months Ended
	Dec. 31, 2020	[1]	Sep. 30, 2020	[1]	Jun. 30, 2020	[1]	Mar. 31, 2020	[1]	Dec. 31, 2019	[1]	Sep. 30, 2019	[1]	Jun. 30, 2019	[1]	Mar. 31, 2019	[1]	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Earnings Per Share [Abstract]
Diluted earnings (loss) per share of common stock from continuing operations	$ 0.13		$ (0.52)		$ 1.01		$ 0.36		$ (0.06)		$ (0.69)		$ 0.63		$ (0.26)		$ 0.98	$ (0.38)	$ (9.08)
Diluted (loss) earnings per share of common stock from discontinued operations																	$ (0.07)	$ (0.90)	$ 2.32
Diluted (loss) earnings per share of common stock																	$ 0.91	$ (1.28)	$ (6.76)

[1] Earnings per share for the year may not equal the sum of quarterly earnings per share due to rounding and the changes in average share calculations.