CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Held for investment, fair value, total	$ 627,398	$ 192,179
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares authorized (in shares)	120,000,000	120,000,000
Common stock, shares issued (in shares)	58,909,369	55,584,979
Common stock, shares outstanding (in shares)	58,504,250	55,243,226
Treasury stock (in shares)	405,119	341,753