Loan Servicing - Originated Mortgage Servicing Rights (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Servicing Asset at Fair Value, Amount [Roll Forward]
Balance, beginning of period	$ 17,780	$ 17,644
Servicing rights capitalized	1,562	1,130
Amortization of servicing rights	(750)	(962)
Balance, end of period	18,592	17,812
Balance, beginning of period	(2,594)	(5,172)
Additions	0	0
Reductions	2,594	235
Balance, end of period	0	(4,937)
Mortgage servicing rights, net	$ 18,592	$ 12,875	$ 15,200

The periodic amortization (in proportion to and over the period of estimated net servicing income or loss) of capitalized servicing rights, which contractually entitle the servicer to receive fees and ancillary revenues for performing billing, collection, disbursement and recordkeeping services in connection with a mortgage portfolio. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 4
-Subparagraph (a)(4)
-URI http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746

Name:	us-gaap_AmortizationOfMortgageServicingRightsMSRs
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration