Regulatory Matters (Tables)

3 Months Ended

Mar. 31, 2015

Banking and Thrift [Abstract]

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

To be categorized as well capitalized, an institution must maintain minimum common equity Tier 1, total risk based, Tier 1 risk based and Tier 1 leveraged ratios as set forth in the following table:

	Actual				For Capital Adequacy Purposes				To Be Well Capitalized Under Prompt Corrective Action Provisions
(amounts in thousands)	Amount		Ratio		Amount		Ratio		Amount		Ratio
As of March 31, 2015:
Common equity Tier 1 (to risk weighted assets)
Customers Bancorp, Inc.	$	454,889	8.25	%	$	248,013	4.5	%	N/A		N/A
Customers Bank	$	496,018	9.05	%	$	246,741	4.5	%	$	356,404	6.5	%
Total capital (to risk weighted assets)
Customers Bancorp, Inc.	$	587,473	10.66	%	$	440,913	8.0	%	N/A		N/A
Customers Bank	$	639,584	11.66	%	$	438,651	8.0	%	$	548,314	10.0	%
Tier 1 capital (to risk weighted assets)
Customers Bancorp, Inc.	$	454,889	8.25	%	$	330,684	6.0	%	N/A		N/A
Customers Bank	$	496,018	9.05	%	$	328,988	6.0	%	$	438,651	8.0	%
Tier 1 capital (to average assets)
Customers Bancorp, Inc.	$	454,889	6.72	%	$	270,915	4.0	%	N/A		N/A
Customers Bank	$	496,018	7.35	%	$	269,801	4.0	%	$	337,251	5.0	%
As of December 31, 2014:
Total capital (to risk weighted assets)
Customers Bancorp, Inc.	$	578,644	11.09	%	$	417,473	8.0	%	N/A		N/A
Customers Bank	$	621,894	11.98	%	$	415,141	8.0	%	$	518,926	10.0	%
Tier 1 capital (to risk weighted assets)
Customers Bancorp, Inc.	$	437,712	8.39	%	$	208,737	4.0	%	N/A		N/A
Customers Bank	$	480,963	9.27	%	$	207,570	4.0	%	$	311,356	6.0	%
Tier 1 capital (to average assets)
Customers Bancorp, Inc.	$	437,712	6.69	%	$	261,622	4.0	%	N/A		N/A
Customers Bank	$	480,963	7.39	%	$	260,462	4.0	%	$	325,577	5.0	%