Prepaid expenses and other assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Derivative financial instruments	$ 10,815	$ 18,332
Prepaid expenses	6,477	4,915
Loans subject to unilateral repurchase rights - Ginnie Mae	4,189	7,426
CRA investments	1,528	1,361
Software	1,263	1,561
Artwork	1,008	1,220
Income Taxes Receivable, Current	613
Federal and state tax receivables, net		0
Prepaid expenses and other assets	58,115	52,242
Other Assets, Miscellaneous, Current	$ 32,222	$ 17,427