Fair Value Measurements - Recurring Level III Assets (Details) - Level III - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 40,272	$ 42,417	$ 43,679	$ 38,919
Realized and unrealized gains (losses) included in earnings	1	1,547	20	5,678
Purchase of securities	627	20,258	1,818	20,780
Maturities/calls	(1,241)	(15,513)	(5,174)	(15,513)
Unrealized gain included in other comprehensive income (loss)	3,293	1,366	4,420	1,645
Unrealized loss included in other comprehensive income (loss)	(3,182)	(2,280)	(4,993)	(3,714)
Ending balance	39,770	47,795	39,770	47,795
Interest Rate Lock Commitments | Interest Rate Lock Commitments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0	5,791	0	1,660
Realized and unrealized gains (losses) included in earnings	0	1,547	0	5,678
Purchase of securities	0	0	0	0
Maturities/calls	0	0	0	0
Unrealized gain included in other comprehensive income (loss)	0	0	0	0
Unrealized loss included in other comprehensive income (loss)	0	0	0	0
Ending balance	0	7,338	0	7,338
Municipal Securities | Total debt securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	40,272	36,626	43,679	37,259
Realized and unrealized gains (losses) included in earnings	1	0	20	0
Purchase of securities	627	20,258	1,818	20,780
Maturities/calls	(1,241)	(15,513)	(5,174)	(15,513)
Unrealized gain included in other comprehensive income (loss)	3,293	1,366	4,420	1,645
Unrealized loss included in other comprehensive income (loss)	(3,182)	(2,280)	(4,993)	(3,714)
Ending balance	$ 39,770	$ 40,457	$ 39,770	$ 40,457