XML 74 R62.htm IDEA: XBRL DOCUMENT v3.24.3

LOANS AND LEASES RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES ON LOANS AND LEASES - Credit Ratings (Detail) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended		12 Months Ended
	Jun. 15, 2023	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		$ 1,828,965		$ 1,828,965		$ 1,570,977
Fiscal year before current year		1,127,390		1,127,390		4,397,333
Two years before current year		4,039,659		4,039,659		1,521,513
Three years before current year		1,193,162		1,193,162		634,860
Four years before current year		522,563		522,563		347,230
Prior		1,282,513		1,282,513		1,173,759
Revolving loans amortized cost basis		2,090,987		2,090,987		1,843,180
Revolving loans converted to term		411,576		411,576		400,268
Loans and leases receivable		12,496,815		12,496,815		11,889,120
Current year, charge-offs		519		2,619		9,211
Fiscal year before current year, charge-offs		2,432		6,539		24,986
Two years before current fiscal year, charge-offs		5,232		23,135		27,153
Three years before current fiscal year, charge-offs		3,363		16,246		15,938
Four years before current fiscal year, charge-offs		1,295		4,715		6,821
Prior, charge-offs		8,383		13,521		10,957
Revolving loans amortized cost basis, charge-offs		0		0		0
Revolving loans converted to term, charge-offs		0		0		0
Loans and leases receivable, charge-offs		21,224	$ 30,020	66,775	$ 69,713	95,066
Allowance for credit losses on FDIC PCD loans, excluding charge-offs	$ 8,700
Small Business Administration (SBA), CARES Act, Paycheck Protection Program
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable		30,500		30,500		74,700
Loans and leases receivable, charge-offs		800		5,000		10,700
Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable		11,271,915		11,271,915		10,565,824
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable		1,255,368		1,255,368		1,398,031
Commercial loans and leases receivable | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		1,705,823		1,705,823		1,291,772
Fiscal year before current year		928,637		928,637		3,911,891
Two years before current year		3,630,717		3,630,717		1,228,524
Three years before current year		956,618		956,618		577,273
Four years before current year		480,140		480,140		290,649
Prior		1,134,038		1,134,038		1,056,227
Revolving loans amortized cost basis		1,993,906		1,993,906		1,734,485
Revolving loans converted to term		411,568		411,568		400,268
Loans and leases receivable		11,241,447		11,241,447		10,491,089
Current year, charge-offs		94		312		1,483
Fiscal year before current year, charge-offs		0		702		381
Two years before current fiscal year, charge-offs		13		5,685		3,169
Three years before current fiscal year, charge-offs		52		4,147		10,348
Four years before current fiscal year, charge-offs		742		2,429		24
Prior, charge-offs		7,808		10,106		9,650
Revolving loans amortized cost basis, charge-offs		0		0		0
Revolving loans converted to term, charge-offs		0		0		0
Loans and leases receivable, charge-offs		8,709		23,381		25,055
Commercial and industrial, including specialized lending
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable		6,642,465		6,642,465		6,211,105
Loans and leases receivable, charge-offs		6,538	9,008	19,282	9,600
Commercial and industrial, including specialized lending | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		1,301,460		1,301,460		1,217,661
Fiscal year before current year		791,524		791,524		1,952,227
Two years before current year		1,630,203		1,630,203		549,699
Three years before current year		344,479		344,479		199,030
Four years before current year		118,354		118,354		64,016
Prior		70,096		70,096		106,137
Revolving loans amortized cost basis		1,986,052		1,986,052		1,734,485
Revolving loans converted to term		400,297		400,297		387,850
Loans and leases receivable		6,642,465		6,642,465		6,211,105
Current year, charge-offs		94		312		1,483
Fiscal year before current year, charge-offs		0		702		381
Two years before current fiscal year, charge-offs		13		5,685		3,169
Three years before current fiscal year, charge-offs		52		4,147		10,348
Four years before current fiscal year, charge-offs		742		2,429		24
Prior, charge-offs		5,637		6,007		1,510
Revolving loans amortized cost basis, charge-offs		0		0		0
Revolving loans converted to term, charge-offs		0		0		0
Loans and leases receivable, charge-offs		6,538		19,282		16,915
Commercial and industrial, including specialized lending | Pass | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		1,288,705		1,288,705		1,184,923
Fiscal year before current year		790,316		790,316		1,909,592
Two years before current year		1,591,974		1,591,974		483,039
Three years before current year		328,477		328,477		170,384
Four years before current year		114,778		114,778		59,213
Prior		32,650		32,650		63,480
Revolving loans amortized cost basis		1,952,229		1,952,229		1,722,559
Revolving loans converted to term		392,242		392,242		384,947
Loans and leases receivable		6,491,371		6,491,371		5,978,137
Commercial and industrial, including specialized lending | Special mention | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		12,755		12,755		18,000
Fiscal year before current year		250		250		3,377
Two years before current year		30,397		30,397		5,127
Three years before current year		3,926		3,926		1,986
Four years before current year		0		0		0
Prior		67		67		595
Revolving loans amortized cost basis		29,747		29,747		7,916
Revolving loans converted to term		4,417		4,417		2,903
Loans and leases receivable		81,559		81,559		39,904
Commercial and industrial, including specialized lending | Substandard | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		14,738
Fiscal year before current year		958		958		39,258
Two years before current year		7,832		7,832		61,533
Three years before current year		12,076		12,076		26,660
Four years before current year		3,576		3,576		4,803
Prior		37,379		37,379		42,062
Revolving loans amortized cost basis		4,076		4,076		4,010
Revolving loans converted to term		3,638		3,638		0
Loans and leases receivable		69,535		69,535		193,064
Commercial and industrial, including specialized lending | Doubtful | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		0
Fiscal year before current year		0		0		0
Two years before current year		0		0		0
Three years before current year		0		0		0
Four years before current year		0		0		0
Prior		0		0		0
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		0		0		0
Multifamily
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable		2,115,978		2,115,978		2,138,622
Loans and leases receivable, charge-offs		2,167	1,999	4,073	3,447
Multifamily | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		76,380		76,380		845
Fiscal year before current year		823		823		1,229,198
Two years before current year		1,209,756		1,209,756		371,016
Three years before current year		301,976		301,976		127,493
Four years before current year		125,476		125,476		49,514
Prior		401,567		401,567		360,556
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		2,115,978		2,115,978		2,138,622
Current year, charge-offs		0		0		0
Fiscal year before current year, charge-offs		0		0		0
Two years before current fiscal year, charge-offs		0		0		0
Three years before current fiscal year, charge-offs		0		0		0
Four years before current fiscal year, charge-offs		0		0		0
Prior, charge-offs		2,167		4,073		3,574
Revolving loans amortized cost basis, charge-offs		0		0		0
Revolving loans converted to term, charge-offs				0		0
Loans and leases receivable, charge-offs		2,167		4,073		3,574
Multifamily | Pass | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		76,380		76,380		845
Fiscal year before current year		823		823		1,229,198
Two years before current year		1,202,986		1,202,986		371,016
Three years before current year		301,976		301,976		127,493
Four years before current year		125,476		125,476		43,046
Prior		303,992		303,992		253,806
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		2,011,633		2,011,633		2,025,404
Multifamily | Special mention | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		0
Fiscal year before current year		0		0		0
Two years before current year		6,770		6,770		0
Three years before current year		0		0		0
Four years before current year		0		0		6,468
Prior		42,662		42,662		67,035
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		49,432		49,432		73,503
Multifamily | Substandard | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		0
Fiscal year before current year		0		0		0
Two years before current year		0		0		0
Three years before current year		0		0		0
Four years before current year		0		0		0
Prior		54,913		54,913		39,715
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		54,913		54,913		39,715
Multifamily | Doubtful | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		0
Fiscal year before current year		0		0		0
Two years before current year		0		0		0
Three years before current year		0		0		0
Four years before current year		0		0		0
Prior		0		0		0
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		0		0		0
Commercial real estate owner occupied loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable		981,904		981,904		797,319
Loans and leases receivable, charge-offs		4	39	26	39
Commercial real estate owner occupied loans: | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		218,625		218,625		41,011
Fiscal year before current year		67,044		67,044		254,878
Two years before current year		238,806		238,806		195,721
Three years before current year		212,608		212,608		77,821
Four years before current year		52,820		52,820		80,420
Prior		173,090		173,090		136,150
Revolving loans amortized cost basis		7,640		7,640		0
Revolving loans converted to term		11,271		11,271		11,318
Loans and leases receivable		981,904		981,904		797,319
Current year, charge-offs		0		0		0
Fiscal year before current year, charge-offs		0		0		0
Two years before current fiscal year, charge-offs		0		0		0
Three years before current fiscal year, charge-offs		0		0		0
Four years before current fiscal year, charge-offs		0		0		0
Prior, charge-offs		4		26		39
Revolving loans amortized cost basis, charge-offs		0		0		0
Revolving loans converted to term, charge-offs		0		0		0
Loans and leases receivable, charge-offs		4		26		39
Commercial real estate owner occupied loans: | Pass | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		218,625		218,625		41,011
Fiscal year before current year		64,100		64,100		254,878
Two years before current year		238,103		238,103		180,289
Three years before current year		197,298		197,298		77,821
Four years before current year		52,820		52,820		44,382
Prior		147,520		147,520		120,248
Revolving loans amortized cost basis		7,640		7,640		0
Revolving loans converted to term		74		74		11,318
Loans and leases receivable		926,180		926,180		729,947
Commercial real estate owner occupied loans: | Special mention | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		0
Fiscal year before current year		0		0		0
Two years before current year		0		0		15,432
Three years before current year		0		0		0
Four years before current year		0		0		35,691
Prior		10,924		10,924		47
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		11,197		11,197		0
Loans and leases receivable		22,121		22,121		51,170
Commercial real estate owner occupied loans: | Substandard | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		0
Fiscal year before current year		2,944		2,944		0
Two years before current year		703		703		0
Three years before current year		15,310		15,310		0
Four years before current year		0		0		347
Prior		14,646		14,646		15,855
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		33,603		33,603		16,202
Commercial real estate owner occupied loans: | Doubtful | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		0
Fiscal year before current year		0		0		0
Two years before current year		0		0		0
Three years before current year		0		0		0
Four years before current year		0		0		0
Prior		0		0		0
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		0		0		0
Commercial real estate non-owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable		1,326,591		1,326,591		1,177,650
Loans and leases receivable, charge-offs		0	0	0	4,527
Commercial real estate non-owner occupied | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		100,123		100,123		12,906
Fiscal year before current year		42,427		42,427		336,791
Two years before current year		417,983		417,983		109,521
Three years before current year		97,555		97,555		172,929
Four years before current year		183,490		183,490		96,699
Prior		484,799		484,799		448,804
Revolving loans amortized cost basis		214		214		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		1,326,591		1,326,591		1,177,650
Current year, charge-offs		0		0		0
Fiscal year before current year, charge-offs		0		0		0
Two years before current fiscal year, charge-offs		0		0		0
Three years before current fiscal year, charge-offs		0		0		0
Four years before current fiscal year, charge-offs		0		0		0
Prior, charge-offs		0		0		4,527
Revolving loans amortized cost basis, charge-offs		0		0		0
Revolving loans converted to term, charge-offs		0		0		0
Loans and leases receivable, charge-offs		0		0		4,527
Commercial real estate non-owner occupied | Pass | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		100,123		100,123		12,906
Fiscal year before current year		30,427		30,427		325,881
Two years before current year		413,675		413,675		109,521
Three years before current year		97,555		97,555		152,227
Four years before current year		182,789		182,789		88,586
Prior		424,192		424,192		367,996
Revolving loans amortized cost basis		214		214		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		1,248,975		1,248,975		1,057,117
Commercial real estate non-owner occupied | Special mention | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		0
Fiscal year before current year		12,000		12,000		0
Two years before current year		4,308		4,308		0
Three years before current year		0		0		20,702
Four years before current year		0		0		0
Prior		438		438		9,148
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		16,746		16,746		29,850
Commercial real estate non-owner occupied | Substandard | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		0
Fiscal year before current year		0		0		10,910
Two years before current year		0		0		0
Three years before current year		0		0		0
Four years before current year		701		701		8,113
Prior		60,169		60,169		71,660
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		60,870		60,870		90,683
Commercial real estate non-owner occupied | Doubtful | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		0
Fiscal year before current year		0		0		0
Two years before current year		0		0		0
Three years before current year		0		0		0
Four years before current year		0		0		0
Prior		0		0		0
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		0		0		0
Construction loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable		174,509		174,509		166,393
Loans and leases receivable, charge-offs		0	0	0	0
Construction loans: | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		9,235		9,235		19,349
Fiscal year before current year		26,819		26,819		138,797
Two years before current year		133,969		133,969		2,567
Three years before current year		0		0		0
Four years before current year		0		0		0
Prior		4,486		4,486		4,580
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		1,100
Loans and leases receivable		174,509		174,509		166,393
Current year, charge-offs		0		0		0
Fiscal year before current year, charge-offs		0		0		0
Two years before current fiscal year, charge-offs		0		0		0
Three years before current fiscal year, charge-offs		0		0		0
Four years before current fiscal year, charge-offs		0		0		0
Prior, charge-offs		0		0		0
Revolving loans amortized cost basis, charge-offs		0		0		0
Revolving loans converted to term, charge-offs		0		0		0
Loans and leases receivable, charge-offs		0		0		0
Construction loans: | Pass | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		9,235		9,235		17,594
Fiscal year before current year		18,651		18,651		138,797
Two years before current year		133,969		133,969		2,567
Three years before current year		0		0		0
Four years before current year		0		0		0
Prior		4,486		4,486		4,580
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		1,100
Loans and leases receivable		166,341		166,341		164,638
Construction loans: | Special mention | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		1,755
Fiscal year before current year		8,168		8,168		0
Two years before current year		0		0		0
Three years before current year		0		0		0
Four years before current year		0		0		0
Prior		0		0		0
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		8,168		8,168		1,755
Construction loans: | Substandard | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		0
Fiscal year before current year		0		0		0
Two years before current year		0		0		0
Three years before current year		0		0		0
Four years before current year		0		0		0
Prior		0		0		0
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		0		0		0
Construction loans: | Doubtful | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		0
Fiscal year before current year		0		0		0
Two years before current year		0		0		0
Three years before current year		0		0		0
Four years before current year		0		0		0
Prior		0		0		0
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		0		0		0
Consumer loans | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		123,142		123,142		279,205
Fiscal year before current year		198,753		198,753		485,442
Two years before current year		408,942		408,942		292,989
Three years before current year		236,544		236,544		57,587
Four years before current year		42,423		42,423		56,581
Prior		148,475		148,475		117,532
Revolving loans amortized cost basis		97,081		97,081		108,695
Revolving loans converted to term		8		8		0
Loans and leases receivable		1,255,368		1,255,368		1,398,031
Current year, charge-offs		425		2,307		7,728
Fiscal year before current year, charge-offs		2,432		5,837		24,605
Two years before current fiscal year, charge-offs		5,219		17,450		23,984
Three years before current fiscal year, charge-offs		3,311		12,099		5,590
Four years before current fiscal year, charge-offs		553		2,286		6,797
Prior, charge-offs		575		3,415		1,307
Revolving loans amortized cost basis, charge-offs		0		0		0
Revolving loans converted to term, charge-offs		0		0		0
Loans and leases receivable, charge-offs		12,515		43,394		70,011
Residential real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable		500,786		500,786		484,435
Loans and leases receivable, charge-offs		19	42	38	69
Residential real estate | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		41,341		41,341		22,613
Fiscal year before current year		22,226		22,226		173,774
Two years before current year		166,957		166,957		132,857
Three years before current year		126,076		126,076		6,687
Four years before current year		6,190		6,190		16,053
Prior		84,782		84,782		75,426
Revolving loans amortized cost basis		53,214		53,214		57,025
Revolving loans converted to term		0		0		0
Loans and leases receivable		500,786		500,786		484,435
Current year, charge-offs		0		0		0
Fiscal year before current year, charge-offs		0		0		0
Two years before current fiscal year, charge-offs		0		0		0
Three years before current fiscal year, charge-offs		0		0		0
Four years before current fiscal year, charge-offs		0		0		0
Prior, charge-offs		19		38		69
Revolving loans amortized cost basis, charge-offs		0		0		0
Revolving loans converted to term, charge-offs		0		0		0
Loans and leases receivable, charge-offs		19		38		69
Residential real estate | Consumer | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		41,200		41,200		22,613
Fiscal year before current year		21,946		21,946		173,424
Two years before current year		165,563		165,563		131,621
Three years before current year		124,381		124,381		6,458
Four years before current year		5,957		5,957		15,508
Prior		80,700		80,700		71,433
Revolving loans amortized cost basis		53,214		53,214		56,844
Revolving loans converted to term		0		0		0
Loans and leases receivable		492,961		492,961		477,901
Residential real estate | Consumer | Non-performing
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		141		141		0
Fiscal year before current year		280		280		350
Two years before current year		1,394		1,394		1,236
Three years before current year		1,695		1,695		229
Four years before current year		233		233		545
Prior		4,082		4,082		3,993
Revolving loans amortized cost basis		0		0		181
Revolving loans converted to term		0		0		0
Loans and leases receivable		7,825		7,825		6,534
Manufactured housing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable		34,481		34,481		38,670
Loans and leases receivable, charge-offs		0	0	0	0
Manufactured housing | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		0
Fiscal year before current year		0		0		0
Two years before current year		0		0		0
Three years before current year		0		0		0
Four years before current year		0		0		98
Prior		34,481		34,481		38,572
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		34,481		34,481		38,670
Current year, charge-offs		0		0		0
Fiscal year before current year, charge-offs		0		0		0
Two years before current fiscal year, charge-offs		0		0		0
Three years before current fiscal year, charge-offs		0		0		0
Four years before current fiscal year, charge-offs		0		0		0
Prior, charge-offs		0		0		0
Revolving loans amortized cost basis, charge-offs		0		0		0
Revolving loans converted to term, charge-offs		0		0		0
Loans and leases receivable, charge-offs		0		0		0
Manufactured housing | Consumer | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		0
Fiscal year before current year		0		0		0
Two years before current year		0		0		0
Three years before current year		0		0		0
Four years before current year		0		0		98
Prior		32,969		32,969		36,464
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		32,969		32,969		36,562
Manufactured housing | Consumer | Non-performing
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		0
Fiscal year before current year		0		0		0
Two years before current year		0		0		0
Three years before current year		0		0		0
Four years before current year		0		0		0
Prior		1,512		1,512		2,108
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		1,512		1,512		2,108
Installment
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable		720,101		720,101		874,926
Loans and leases receivable, charge-offs		12,496	$ 18,932	43,356	$ 52,031
Installment | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		81,801		81,801		256,592
Fiscal year before current year		176,527		176,527		311,668
Two years before current year		241,985		241,985		160,132
Three years before current year		110,468		110,468		50,900
Four years before current year		36,233		36,233		40,430
Prior		29,212		29,212		3,534
Revolving loans amortized cost basis		43,867		43,867		51,670
Revolving loans converted to term		8		8		0
Loans and leases receivable		720,101		720,101		874,926
Current year, charge-offs		425		2,307		7,728
Fiscal year before current year, charge-offs		2,432		5,837		24,605
Two years before current fiscal year, charge-offs		5,219		17,450		23,984
Three years before current fiscal year, charge-offs		3,311		12,099		5,590
Four years before current fiscal year, charge-offs		553		2,286		6,797
Prior, charge-offs		556		3,377		1,238
Revolving loans amortized cost basis, charge-offs		0		0		0
Revolving loans converted to term, charge-offs		0		0		0
Loans and leases receivable, charge-offs		12,496		43,356		69,942
Installment | Consumer | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		81,762		81,762		253,958
Fiscal year before current year		174,647		174,647		307,566
Two years before current year		240,433		240,433		158,381
Three years before current year		109,349		109,349		50,354
Four years before current year		35,925		35,925		39,953
Prior		28,770		28,770		3,448
Revolving loans amortized cost basis		43,757		43,757		51,480
Revolving loans converted to term		8		8		0
Loans and leases receivable		714,651		714,651		865,140
Installment | Consumer | Non-performing
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		39		39		2,634
Fiscal year before current year		1,880		1,880		4,102
Two years before current year		1,552		1,552		1,751
Three years before current year		1,119		1,119		546
Four years before current year		308		308		477
Prior		442		442		86
Revolving loans amortized cost basis		110		110		190
Revolving loans converted to term		0		0		0
Loans and leases receivable		5,450		5,450		9,786
Specialized lending | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable		$ 5,468,507		$ 5,468,507		$ 5,006,693

X

- Definition

Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase, Excluding Charge-Offs

+ References

No definition available.

+ Details

Name:	cubi_FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncreaseExcludingChargeOffs
Namespace Prefix:	cubi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

+ Details

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

X

- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-5

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amortized cost excluding accrued interest, of financing receivable originated more than five years prior to current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount, excluding accrued interest, of writeoff of financing receivable originated more than five years before current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

+ Details

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

X

- Definition

Amortized cost excluding accrued interest, of financing receivable that can be withdrawn, repaid, and redrawn.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestRevolving
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amortized cost excluding accrued interest, of revolving financing receivable converted to term loan.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6A

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount, excluding accrued interest, of writeoff of revolving financing receivable converted to term loan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6A

+ Details

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

X

- Definition

Amount, excluding accrued interest, of writeoff of financing receivable that can be withdrawn, repaid, and redrawn.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

+ Details

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

X

- Definition

Amortized cost excluding accrued interest, of financing receivable originated four years prior to current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount, excluding accrued interest, of writeoff of financing receivable originated four years before current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

+ Details

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

X

- Definition

Amortized cost excluding accrued interest, of financing receivable originated three years prior to current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount, excluding accrued interest, of writeoff of financing receivable originated three years before current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

+ Details

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

X

- Definition

Amortized cost excluding accrued interest, of financing receivable originated in current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount, excluding accrued interest, of writeoff of financing receivable originated in current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

+ Details

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

X

- Definition

Amortized cost excluding accrued interest, of financing receivable originated two years prior to current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount, excluding accrued interest, of writeoff of financing receivable originated two years before current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

+ Details

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

X

- Definition

Amortized cost excluding accrued interest of financing receivable originated in fiscal year prior to current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount, excluding accrued interest, of writeoff of financing receivable originated in fiscal year before current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

+ Details

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

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 29
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-29

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-5

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

+ Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesAxis=cubi_SmallBusinessAdministrationSBACARESActPaycheckProtectionProgramMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ClassOfFinancingReceivableTypeOfBorrowerAxis=us-gaap_CommercialBorrowerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ClassOfFinancingReceivableTypeOfBorrowerAxis=us-gaap_ConsumerBorrowerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=cubi_CommercialLoansAndLeasesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=cubi_CommercialAndIndustrialExcludingCommercialRealEstateOwnerOccupiedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InternalCreditAssessmentAxis=us-gaap_PassMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InternalCreditAssessmentAxis=us-gaap_SpecialMentionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InternalCreditAssessmentAxis=us-gaap_SubstandardMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InternalCreditAssessmentAxis=us-gaap_DoubtfulMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=cubi_MultifamilyPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=cubi_CommercialRealEstateOwnerOccupiedPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=cubi_CommercialRealEstateNonOwnerOccupiedPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=cubi_ConstructionPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ResidentialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentPerformanceStatusAxis=us-gaap_PerformingFinancingReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentPerformanceStatusAxis=us-gaap_NonperformingFinancingReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=cubi_ManufacturedHousingPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=cubi_InstallmentLoansPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=cubi_SpecialtyLendingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: