Common and Preferred Stock - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended		6 Months Ended	9 Months Ended
	Aug. 05, 2020	Sep. 30, 2021	Mar. 31, 2021	Jun. 30, 2021	Sep. 30, 2021	Feb. 07, 2019
Common Stock Repurchases (Textual) [Abstract]
Authorized repurchase of additional shares						500,000
Repurchased shares					53,784
Shares remain available for repurchase		546,283			546,283
Common stock purchased for treasury					$ 2.8
Convertible Preferred Stock (as if Converted to Common Stock)
Class Of Stock [Line Items]
Preferred stock dividend rate percentage	5.50%
Frequency of periodic payment of cumulative dividend	quarterly
Convertible preferred stock conversion price per share	$ 21.25
Dividends paid in kind			$ 3.8	$ 3.8	$ 5.8
Dividends paid in cash		$ 2.0
Crestview Partners | Convertible Preferred Stock (as if Converted to Common Stock)
Class Of Stock [Line Items]
Convertible Preferred Stock, Shares Issued upon Conversion	135,000
Preferred Stock, Par value	$ 0.01
Purchase price	$ 135.0
Shares issued, price per share	$ 1.000
Capital raising expense	$ 9.2