    <SEC-DOCUMENT>0001488813-20-000232-index.html : 20201110
    <SEC-HEADER>0001488813-20-000232.hdr.sgml : 20201110
    <ACCEPTANCE-DATETIME>20201110173023
    ACCESSION NUMBER:		0001488813-20-000232
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		31
    CONFORMED PERIOD OF REPORT:	20201110
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20201110
    DATE AS OF CHANGE:		20201110

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Customers Bancorp, Inc.
    		CENTRAL INDEX KEY:			0001488813
    		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
    		IRS NUMBER:				272290659
    		STATE OF INCORPORATION:			PA
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-35542
    		FILM NUMBER:		201302313

    	BUSINESS ADDRESS:
    		STREET 1:		701 READING AVENUE
    		CITY:			WEST READING
    		STATE:			PA
    		ZIP:			19611
    		BUSINESS PHONE:		484-359-7113

    	MAIL ADDRESS:
    		STREET 1:		701 READING AVENUE
    		CITY:			WEST READING
    		STATE:			PA
    		ZIP:			19611

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	Customers 1st Bancorp, Inc.
    		DATE OF NAME CHANGE:	20100408
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>cubi-20201110.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: cubi-20201110.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>bmt-mfactransactionirdec.htm
    <DESCRIPTION>EX-99.1
    <TEXT>
    Document 2 - file: bmt-mfactransactionirdec.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>3
    <FILENAME>cubi-20201110.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
    <TEXT>
    Document 3 - file: cubi-20201110.xsd

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.CAL
    <SEQUENCE>4
    <FILENAME>cubi-20201110_cal.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT
    <TEXT>
    Document 4 - file: cubi-20201110_cal.xml

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    <FILENAME>cubi-20201110_def.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT
    <TEXT>
    Document 5 - file: cubi-20201110_def.xml

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    <SEQUENCE>6
    <FILENAME>cubi-20201110_lab.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT
    <TEXT>
    Document 6 - file: cubi-20201110_lab.xml

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    <FILENAME>cubi-20201110_pre.xml
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    Document 7 - file: cubi-20201110_pre.xml

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    <FILENAME>bmt-mfactransactionirdec001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: bmt-mfactransactionirdec001.jpg

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    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>bmt-mfactransactionirdec002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: bmt-mfactransactionirdec002.jpg

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    <FILENAME>bmt-mfactransactionirdec003.jpg
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    <TEXT>
    Document 10 - file: bmt-mfactransactionirdec003.jpg

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    <SEQUENCE>11
    <FILENAME>bmt-mfactransactionirdec004.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: bmt-mfactransactionirdec004.jpg

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    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>bmt-mfactransactionirdec005.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 12 - file: bmt-mfactransactionirdec005.jpg

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    <FILENAME>bmt-mfactransactionirdec006.jpg
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    Document 13 - file: bmt-mfactransactionirdec006.jpg

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    <FILENAME>bmt-mfactransactionirdec007.jpg
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    <TEXT>
    Document 14 - file: bmt-mfactransactionirdec007.jpg

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    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>bmt-mfactransactionirdec008.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 15 - file: bmt-mfactransactionirdec008.jpg

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    <SEQUENCE>16
    <FILENAME>bmt-mfactransactionirdec009.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 16 - file: bmt-mfactransactionirdec009.jpg

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    <SEQUENCE>17
    <FILENAME>bmt-mfactransactionirdec010.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 17 - file: bmt-mfactransactionirdec010.jpg

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    <SEQUENCE>18
    <FILENAME>bmt-mfactransactionirdec011.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 18 - file: bmt-mfactransactionirdec011.jpg

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    <SEQUENCE>19
    <FILENAME>bmt-mfactransactionirdec012.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 19 - file: bmt-mfactransactionirdec012.jpg

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    <SEQUENCE>20
    <FILENAME>bmt-mfactransactionirdec013.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 20 - file: bmt-mfactransactionirdec013.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>21
    <FILENAME>bmt-mfactransactionirdec014.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 21 - file: bmt-mfactransactionirdec014.jpg

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    <TYPE>GRAPHIC
    <SEQUENCE>22
    <FILENAME>bmt-mfactransactionirdec015.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 22 - file: bmt-mfactransactionirdec015.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>23
    <FILENAME>cubi-20201110_g1.jpg
    <TEXT>
    Document 23 - file: cubi-20201110_g1.jpg

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    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>24
    <FILENAME>cubi-20201110_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 24 - file: cubi-20201110_htm.html

    Document 24 - RAW XML: cubi-20201110_htm.xml

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    <TYPE>XML
    <SEQUENCE>25
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 25 - file: R1.htm

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    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>26
    <FILENAME>Financial_Report.xlsx
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 26 - file: Financial_Report.xlsx

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    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>27
    <FILENAME>Show.js
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 27 - file: Show.js

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    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>28
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 28 - file: report.css

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>29
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 29 - file: FilingSummary.html

    Document 29 - RAW XML: FilingSummary.xml

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    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>31
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 31 - file: MetaLinks.json

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    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>32
    <FILENAME>0001488813-20-000232-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 32 - file: 0001488813-20-000232-xbrl.zip

    </DOCUMENT>
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