Regulatory Capital (Tables)

3 Months Ended

Mar. 31, 2022

Regulatory Capital [Abstract]

Summary of Capital Amounts, Tier 1 Risk Based and Tier 1 Leveraged Ratios

Generally, to comply with the regulatory definition of adequately capitalized, or well capitalized, respectively, or to comply with the Basel III capital requirements, an institution must at least maintain the common equity Tier 1, Tier 1 and total risk-based capital ratios and the Tier 1 leverage ratio in excess of the related minimum ratios as set forth in the following table:

					Minimum Capital Levels to be Classified as:
	Actual				Adequately Capitalized				Well Capitalized				Basel III Compliant
(dollars in thousands)	Amount		Ratio		Amount		Ratio		Amount		Ratio		Amount		Ratio
As of March 31, 2022:
Common equity Tier 1 capital (to risk-weighted assets)
Customers Bancorp, Inc.	$	1,344,684	9.893	%	$	611,629	4.500	%	N/A		N/A		$	951,423	7.000	%
Customers Bank	$	1,573,796	11.598	%	$	610,658	4.500	%	$	882,062	6.500	%	$	949,913	7.000	%
Tier 1 capital (to risk-weighted assets)
Customers Bancorp, Inc.	$	1,482,477	10.907	%	$	815,505	6.000	%	N/A		N/A		$	1,155,299	8.500	%
Customers Bank	$	1,573,796	11.598	%	$	814,211	6.000	%	$	1,085,615	8.000	%	$	1,153,466	8.500	%
Total capital (to risk-weighted assets)
Customers Bancorp, Inc.	$	1,749,655	12.873	%	$	1,087,340	8.000	%	N/A		N/A		$	1,427,134	10.500	%
Customers Bank	$	1,768,525	13.032	%	$	1,085,615	8.000	%	$	1,357,019	10.000	%	$	1,424,870	10.500	%
Tier 1 capital (to average assets)
Customers Bancorp, Inc.	$	1,482,477	7.723	%	$	767,836	4.000	%	N/A		N/A		$	767,836	4.000	%
Customers Bank	$	1,573,796	8.211	%	$	766,712	4.000	%	$	958,391	5.000	%	$	766,712	4.000	%
As of December 31, 2021:
Common equity Tier 1 capital (to risk-weighted assets)
Customers Bancorp, Inc.	$	1,291,270	9.981	%	$	582,179	4.500	%	N/A		N/A		$	905,611	7.000	%
Customers Bank	$	1,526,583	11.825	%	$	580,943	4.500	%	$	839,140	6.500	%	$	903,689	7.000	%
Tier 1 capital (to risk-weighted assets)
Customers Bancorp, Inc.	$	1,429,063	11.046	%	$	776,238	6.000	%	N/A		N/A		$	1,099,671	8.500	%
Customers Bank	$	1,526,583	11.825	%	$	774,591	6.000	%	$	1,032,788	8.000	%	$	1,097,337	8.500	%
Total capital (to risk-weighted assets)
Customers Bancorp, Inc.	$	1,667,395	12.888	%	$	1,034,984	8.000	%	N/A		N/A		$	1,358,417	10.500	%
Customers Bank	$	1,692,512	13.110	%	$	1,032,788	8.000	%	$	1,290,985	10.000	%	$	1,355,534	10.500	%
Tier 1 capital (to average assets)
Customers Bancorp, Inc.	$	1,429,063	7.413	%	$	771,084	4.000	%	N/A		N/A		$	771,084	4.000	%
Customers Bank	$	1,526,583	7.925	%	$	770,528	4.000	%	$	963,160	5.000	%	$	770,528	4.000	%