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Loans Receivable and Allowance for Loan Losses - Allowance for Loans, by Portfolio Segment and Impairment Method (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Financing Receivable, Impaired [Line Items]
Positive or Negative Qualitative Adjustment of the Loss Migration Ratio or Individual Specific Reserve Allocations, In Basis Points
Loans by Portfolio Segment and Impairment Method [Abstract]
Impaired loans, gross carrying value	$ 116,269		$ 90,155
Specific allowance	12,666		9,160
Loss coverage ratio	10.90%		10.20%
Non-impaired loans	4,960,074		4,208,183
General allowance	54,654		57,781
Loss coverage ratio	1.10%		1.40%
Total loans outstanding	5,076,343		4,298,338
Allowance for loan losses - Total	67,320		66,941		61,952
Loss coverage ratio	1.30%		1.60%
Real estate-Residential
Loans by Portfolio Segment and Impairment Method [Abstract]
Impaired loans, gross carrying value	0		0
Specific allowance	0		0
Non-impaired loans	10,039		9,247
General allowance	25		74
Loss coverage ratio	0.20%		0.80%
Total loans outstanding	10,039		9,247
Allowance for loan losses - Total	25		74
Loss coverage ratio	0.20%		0.80%
Real estate-Commercial
Loans by Portfolio Segment and Impairment Method [Abstract]
Impaired loans, gross carrying value	67,544		53,634
Specific allowance	6,670		4,906
Loss coverage ratio	9.90%		9.10%
Non-impaired loans	3,753,619		3,046,832
General allowance	39,227		40,256
Loss coverage ratio	1.00%		1.30%
Total loans outstanding	3,821,163		3,100,466
Allowance for loan losses - Total	45,897		45,162
Loss coverage ratio	1.20%		1.50%
Real estate-Construction
Loans by Portfolio Segment and Impairment Method [Abstract]
Impaired loans, gross carrying value	1,625		1,710
Specific allowance	0		0
Loss coverage ratio	0.00%		0.00%
Non-impaired loans	71,231		63,335
General allowance	628		986
Loss coverage ratio	0.90%		1.60%
Total loans outstanding	72,856		65,045
Allowance for loan losses - Total	628		986
Loss coverage ratio	0.90%		1.50%
Commercial business
Loans by Portfolio Segment and Impairment Method [Abstract]
Impaired loans, gross carrying value	40,106		27,274
Specific allowance	5,805		4,158
Loss coverage ratio	14.50%		15.20%
Non-impaired loans	908,987		894,282
General allowance	11,787		13,448
Loss coverage ratio	1.30%		1.50%
Total loans outstanding	949,093		921,556
Allowance for loan losses - Total	17,592		17,606
Loss coverage ratio	1.90%		1.90%
Trade finance
Loans by Portfolio Segment and Impairment Method [Abstract]
Impaired loans, gross carrying value	5,692		6,199
Specific allowance	159		96
Loss coverage ratio	2.80%		1.50%
Non-impaired loans	118,993		145,871
General allowance	2,494		2,256
Loss coverage ratio	2.10%		1.50%
Total loans outstanding	124,685		152,070
Allowance for loan losses - Total	2,653		2,352
Loss coverage ratio	2.10%		1.50%
Consumer and Other
Loans by Portfolio Segment and Impairment Method [Abstract]
Impaired loans, gross carrying value	1,302		1,338
Specific allowance	32		0
Loss coverage ratio	2.50%		0.00%
Non-impaired loans	97,205		48,616
General allowance	493		761
Loss coverage ratio	0.50%		1.60%
Total loans outstanding	98,507		49,954
Allowance for loan losses - Total	525		761
Loss coverage ratio	0.50%		1.50%
Real Estate
Loans by Portfolio Segment and Impairment Method [Abstract]
Total loans outstanding	3,904,058		3,174,758
Legacy
Loans by Portfolio Segment and Impairment Method [Abstract]
Total loans outstanding			3,356,522
Legacy | Real estate-Residential
Loans by Portfolio Segment and Impairment Method [Abstract]
Total loans outstanding			9,247
Legacy | Real estate-Construction
Loans by Portfolio Segment and Impairment Method [Abstract]
Total loans outstanding			57,980
Legacy | Commercial business
Loans by Portfolio Segment and Impairment Method [Abstract]
Total loans outstanding	815,664		753,855
Allowance for loan losses - Total	16,796		16,490		20,681
Legacy | Trade finance
Loans by Portfolio Segment and Impairment Method [Abstract]
Total loans outstanding	122,941		150,372
Allowance for loan losses - Total	2,653		2,349		1,786
Legacy | Consumer and Other
Loans by Portfolio Segment and Impairment Method [Abstract]
Total loans outstanding	32,956		27,820
Allowance for loan losses - Total	461		658		445
Legacy | Real Estate
Loans by Portfolio Segment and Impairment Method [Abstract]
Total loans outstanding	3,126,101		2,424,474
Allowance for loan losses - Total	40,068		41,505		39,040
Acquired
Loans by Portfolio Segment and Impairment Method [Abstract]
Specific allowance	1,714	[1]	1,257	[1]
Total loans outstanding			941,816
Acquired | Real estate-Residential
Loans by Portfolio Segment and Impairment Method [Abstract]
Specific allowance	0	[1]	0	[1]
Total loans outstanding			0
Acquired | Real estate-Construction
Loans by Portfolio Segment and Impairment Method [Abstract]
Specific allowance	0	[1]	0	[1]
Total loans outstanding			7,065
Acquired | Commercial business
Loans by Portfolio Segment and Impairment Method [Abstract]
Specific allowance	622	[1]	1,074	[1]
Total loans outstanding	133,429		167,701
Allowance for loan losses - Total	796		1,115		0
Acquired | Trade finance
Loans by Portfolio Segment and Impairment Method [Abstract]
Specific allowance	0	[1]	0	[1]
Total loans outstanding	1,744		1,698
Allowance for loan losses - Total	0		3		0
Acquired | Consumer and Other
Loans by Portfolio Segment and Impairment Method [Abstract]
Specific allowance	0	[1]	0	[1]
Total loans outstanding	65,551		22,134
Allowance for loan losses - Total	64		103		0
Acquired | Real Estate
Loans by Portfolio Segment and Impairment Method [Abstract]
Total loans outstanding	777,957		750,284
Allowance for loan losses - Total	$ 6,482		$ 4,718		$ 0
[1] APLs that became impaired subsequent to being acquired.

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A valuation allowance for financing receivables that are expected to be uncollectible.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

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Amount of allowance for credit losses related to recorded investment.

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Amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. Excludes amounts related to receivables held-for-sale.

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