Subsequent Events	6 Months Ended
Jun. 30, 2021
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENTSOn July 28, 2021, Customers' board of directors approved a plan to redeem $ 82.5 million, or all of our outstanding shares of Series C Preferred Stock and Series D Preferred Stock. On August 6, 2021, Customers Bancorp completed an underwritten public offering of $100 million in aggregate principal amount of its 2.875% Fixed-to-Floating Rate Senior Notes due 2031 (the “Notes”). The price to the public was 100% of the principal amount of the Notes. The Company estimates the net proceeds from the sale of the Notes, after deducting discounts and commissions and estimated offering expenses payable by the Company, will be approximately $98.7 million. The Company intends to use the net proceeds from the offering to fund the redemption of all of the Company's outstanding Series C Preferred Stock and Series D Preferred Stock. The Company intends to use any remaining proceeds following the redemptions for general corporate purposes, which may include working capital, repaying indebtedness and providing capital to the Bank. The amounts the Company actually expends for any purpose may vary significantly depending upon numerous factors, including assessments of potential market opportunities and competitive developments. The offering of the Notes was made pursuant to the Company’s effective shelf registration statement on Form S-3 previously filed by the Company with the SEC.

Subsequent Events

6 Months Ended

Jun. 30, 2021

SUBSEQUENT EVENTSOn July 28, 2021, Customers' board of directors approved a plan to redeem $ 82.5 million, or all of our outstanding shares of Series C Preferred Stock and Series D Preferred Stock. On August 6, 2021, Customers Bancorp completed an underwritten public offering of $100 million in aggregate principal amount of its 2.875% Fixed-to-Floating Rate Senior Notes due 2031 (the “Notes”). The price to the public was 100% of the principal amount of the Notes. The Company estimates the net proceeds from the sale of the Notes, after deducting discounts and commissions and estimated offering expenses payable by the Company, will be approximately $98.7 million. The Company intends to use the net proceeds from the offering to fund the redemption of all of the Company's outstanding Series C Preferred Stock and Series D Preferred Stock. The Company intends to use any remaining proceeds following the redemptions for general corporate purposes, which may include working capital, repaying indebtedness and providing capital to the Bank. The amounts the Company actually expends for any purpose may vary significantly depending upon numerous factors, including assessments of potential market opportunities and competitive developments. The offering of the Notes was made pursuant to the Company’s effective shelf registration statement on Form S-3 previously filed by the Company with the SEC.