Portfolio Loans - Activity in the allowance for loan losses (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Activity in the allowance for loan losses
ACL beginning balance	$ 88,213	$ 93,943	$ 87,887	$ 101,048
Provision for credit losses	1,653	(1,700)	1,400	(8,496)
Charged-off	(1,679)	(1,538)	(1,804)	(2,502)
Recoveries	570	527	1,274	1,182
ACL ending balance	88,757	95,410	88,757	95,410
Allowance for loan losses Ending balance attributed to:
Collectively evaluated for impairment	83,906		83,906		$ 84,298
Individually evaluated for impairment	4,851		4,851		3,589
Total	88,757	95,410	88,757	95,410	87,887
Loans:
Collectively evaluated for impairment	7,482,323		7,482,323		7,173,618
Individually evaluated for impairment	15,455		15,455		15,380
Total	7,497,778		7,497,778		7,188,998
Day 1 PCD
Activity in the allowance for loan losses
ACL ending balance		4,178		4,178
Allowance for loan losses Ending balance attributed to:
Total		4,178		4,178
Commercial Loans
Activity in the allowance for loan losses
ACL beginning balance	24,173	23,025	23,855	23,866
Provision for credit losses	(743)	(1,420)	(492)	(2,084)
Charged-off	(208)	(1,000)	(208)	(1,262)
Recoveries	137	205	204	290
ACL ending balance	23,359	24,356	23,359	24,356
Allowance for loan losses Ending balance attributed to:
Collectively evaluated for impairment	20,533		20,533		20,291
Individually evaluated for impairment	2,826		2,826		3,564
Total	23,359	24,356	23,359	24,356	23,855
Loans:
Collectively evaluated for impairment	1,912,656		1,912,656		1,936,898
Individually evaluated for impairment	7,024		7,024		6,988
Total	1,919,680		1,919,680		1,943,886
Commercial Loans \| Day 1 PCD
Activity in the allowance for loan losses
ACL ending balance		3,546		3,546
Allowance for loan losses Ending balance attributed to:
Total		3,546		3,546
Commercial Real Estate Loans
Activity in the allowance for loan losses
ACL beginning balance	37,339	43,306	38,249	46,230
Provision for credit losses	1,028	(3,390)	(190)	(6,085)
Charged-off	(1,372)	(317)	(1,372)	(620)
Recoveries	187	39	495	113
ACL ending balance	37,182	39,974	37,182	39,974
Allowance for loan losses Ending balance attributed to:
Collectively evaluated for impairment	35,182		35,182		38,249
Individually evaluated for impairment	2,000		2,000
Total	37,182	39,974	37,182	39,974	38,249
Loans:
Collectively evaluated for impairment	3,222,067		3,222,067		3,114,057
Individually evaluated for impairment	6,023		6,023		5,750
Total	3,228,090		3,228,090		3,119,807
Commercial Real Estate Loans \| Day 1 PCD
Activity in the allowance for loan losses
ACL ending balance		336		336
Allowance for loan losses Ending balance attributed to:
Total		336		336
Real Estate Construction
Activity in the allowance for loan losses
ACL beginning balance	5,705	6,879	5,102	8,193
Provision for credit losses	(63)	671	447	(579)
Charged-off				(209)
Recoveries	27	49	120	194
ACL ending balance	5,669	7,599	5,669	7,599
Allowance for loan losses Ending balance attributed to:
Collectively evaluated for impairment	5,669		5,669		5,102
Total	5,669	7,599	5,669	7,599	5,102
Loans:
Collectively evaluated for impairment	465,923		465,923		385,724
Individually evaluated for impairment	262		262		272
Total	466,185		466,185		385,996
Retail real estate
Activity in the allowance for loan losses
ACL beginning balance	17,555	19,978	17,589	21,992
Provision for credit losses	312	404	142	(1,873)
Charged-off	(17)	(157)	(33)	(160)
Recoveries	134	151	286	417
ACL ending balance	17,984	20,505	17,984	20,505
Allowance for loan losses Ending balance attributed to:
Collectively evaluated for impairment	17,959		17,959		17,564
Individually evaluated for impairment	25		25		25
Total	17,984	20,505	17,984	20,505	17,589
Loans:
Collectively evaluated for impairment	1,588,767		1,588,767		1,510,606
Individually evaluated for impairment	2,146		2,146		2,370
Total	1,590,913		1,590,913		1,512,976
Retail real estate \| Day 1 PCD
Activity in the allowance for loan losses
ACL ending balance		129		129
Allowance for loan losses Ending balance attributed to:
Total		129		129
Retail other
Activity in the allowance for loan losses
ACL beginning balance	3,441	755	3,092	767
Provision for credit losses	1,119	2,035	1,493	2,125
Charged-off	(82)	(64)	(191)	(251)
Recoveries	85	83	169	168
ACL ending balance	4,563	2,976	4,563	2,976
Allowance for loan losses Ending balance attributed to:
Collectively evaluated for impairment	4,563		4,563		3,092
Total	4,563	2,976	4,563	2,976	3,092
Loans:
Collectively evaluated for impairment	292,910		292,910		226,333
Total	$ 292,910		$ 292,910		$ 226,333
Retail other \| Day 1 PCD
Activity in the allowance for loan losses
ACL ending balance		167		167
Allowance for loan losses Ending balance attributed to:
Total		$ 167		$ 167

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Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business.

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Amount of increase (decrease) in allowance for credit loss on accounts receivable.

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