Regulatory Matters (Tables)

9 Months Ended

Sep. 30, 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 September 30, 2015:
Common equity Tier 1 (to risk weighted assets)
Customers Bancorp, Inc.	$	481,277	8.24	%	$	262,811	4.5	%	N/A		N/A
Customers Bank	$	549,276	9.45	%	$	261,566	4.5	%	$	377,818	6.5	%
Total capital (to risk weighted assets)
Customers Bancorp, Inc.	$	667,532	11.43	%	$	467,219	8.0	%	N/A		N/A
Customers Bank	$	693,099	11.92	%	$	465,007	8.0	%	$	581,259	10.0	%
Tier 1 capital (to risk weighted assets)
Customers Bancorp, Inc.	$	536,846	9.19	%	$	350,414	6.0	%	N/A		N/A
Customers Bank	$	549,276	9.45	%	$	348,755	6.0	%	$	465,007	8.0	%
Tier 1 capital (to average assets)
Customers Bancorp, Inc.	$	536,846	7.27	%	$	295,328	4.0	%	N/A		N/A
Customers Bank	$	549,276	7.46	%	$	294,713	4.0	%	$	368,392	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	%