Stock Offerings (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended				3 Months Ended
	Sep. 30, 2021	Aug. 31, 2021	Apr. 30, 2021	Dec. 31, 2020	Sep. 30, 2021
Subsidiary, Sale of Stock [Line Items]
Preferred stock, par value (in dollars per share)	$ 1,000			$ 1,000	$ 1,000
Common stock issued related to stock-based compensation					$ 1,000
Interchecks
Subsidiary, Sale of Stock [Line Items]
Common stock issued related to equity method investment (in shares)		107,928
Trabian
Subsidiary, Sale of Stock [Line Items]
Common stock issued related to acquisition (in shares)			17,597
Chartwell
Subsidiary, Sale of Stock [Line Items]
Common stock issued related to stock-based compensation (in shares)	24,408
Sale of stock, price per share (in dollars per share)	$ 40.97				$ 40.97
Common stock issued related to stock-based compensation	$ 1,000
Series B Preferred Stock
Subsidiary, Sale of Stock [Line Items]
Preferred stock, par value (in dollars per share)				1.00
Liquidation preference (in dollars per share)				1,000
Dividends declared (in dollars per share)				46.03
Series C Preferred Stock
Subsidiary, Sale of Stock [Line Items]
Preferred stock, par value (in dollars per share)				1.00
Liquidation preference (in dollars per share)				1,000
Dividends declared (in dollars per share)				49.86
Series B And Series C preferred Stock
Subsidiary, Sale of Stock [Line Items]
Liquidation amount per share (in dollars per share)				$ 10,000