Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended				12 Months Ended
	Feb. 23, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Subsequent Event [Line Items]
Assets		$ 3,934,181				$ 3,934,181	$ 3,466,943
Cash dividends declared per common share (in dollars per share)		$ 1.50	$ 1.50	$ 0.82	$ 0.82	$ 4.64	$ 2.98	$ 2.44
Stone Harbor Investment Partners LP
Subsequent Event [Line Items]
Assets		$ 14,700,000				$ 14,700,000
Subsequent Event
Subsequent Event [Line Items]
Cash dividends declared per common share (in dollars per share)	$ 1.50