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Regulatory Requirements and Restrictions (Tables)
 12 Months Ended
Dec. 31, 2014
Regulatory Requirements and Restrictions [Abstract]  
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations
The following tables provide information regarding regulatory capital for the Company and its banking subsidiary as of December 31, 2014 and 2013 (dollars in thousands):
 
2014
 
Actual
 
Required to be
Considered Well
Capitalized
 
 
 
Required to be
Considered
Adequately
Capitalized
 
Amount
 
Ratio
 
Amount
 
 
 
Ratio
 
 
 
Amount
 
Ratio
BankUnited, Inc.:
 

 
 

 
 

 
 
 
 

 
 
 
 

 
 

Tier 1 leverage
$
1,937,480

 
10.70
%
 
N/A

 
(1
)
 
N/A

 
(1
)
 
$
725,784

 
4.00
%
Tier 1 risk-based capital
$
1,937,480

 
15.45
%
 
$
752,257

 
 
 
6.00
%
 
 
 
$
501,505

 
4.00
%
Total risk based capital
$
2,039,523

 
16.27
%
 
$
1,253,761

 
 
 
10.00
%
 
 
 
$
1,003,009

 
8.00
%
BankUnited:
 

 
 

 
 

 
 
 
 

 
 
 
 

 
 

Tier 1 leverage
$
1,636,481

 
9.10
%
 
$
898,708

 
 
 
5.00
%
 
 
 
$
718,967

 
4.00
%
Tier 1 risk-based capital
$
1,636,481

 
13.18
%
 
$
744,754

 
 
 
6.00
%
 
 
 
$
496,502

 
4.00
%
Total risk based capital
$
1,736,076

 
13.99
%
 
$
1,241,256

 
 
 
10.00
%
 
 
 
$
993,005

 
8.00
%
 
2013
 
Actual
 
Required to be
Considered Well
Capitalized
 
 
 
Required to be
Considered
Adequately
Capitalized
 
Amount
 
Ratio
 
Amount
 
 
 
Ratio
 
 
 
Amount
 
Ratio
BankUnited, Inc.:
 

 
 

 
 

 
 
 
 

 
 
 
 

 
 

Tier 1 leverage
$
1,801,848

 
12.42
%
 
N/A

 
(1
)
 
N/A

 
(1
)
 
$
580,454

 
4.00
%
Tier 1 risk-based capital
$
1,801,848

 
21.06
%
 
$
513,439

 
 
 
6.00
%
 
 
 
$
342,293

 
4.00
%
Total risk based capital
$
1,876,640

 
21.93
%
 
$
855,732

 
 
 
10.00
%
 
 
 
$
684,586

 
8.00
%
BankUnited:
 

 
 

 
 

 
 
 
 

 
 
 
 

 
 

Tier 1 leverage
$
1,519,285

 
10.58
%
 
$
718,098

 
 
 
5.00
%
 
 
 
$
574,479

 
4.00
%
Tier 1 risk-based capital
$
1,519,285

 
18.06
%
 
$
504,822

 
 
 
6.00
%
 
 
 
$
336,548

 
4.00
%
Total risk based capital
$
1,592,564

 
18.93
%
 
$
841,371

 
 
 
10.00
%
 
 
 
$
673,097

 
8.00
%
 
(1)
There is no tier 1 leverage ratio component in the definition of a well-capitalized bank holding company.