Loans (Analysis of the Aged Loan Portfolio) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	$ 31,828	$ 31,352
Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	5,171,371	5,158,985
30 - 59 Days Past Due	23,760	14,656
60 - 89 Days Past Due	3,661	8,415
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	436	1,386
Total Past Due	27,857	24,457
Nonaccrual Loans	31,828	31,352
Loans Receivable, Net	5,231,056	5,214,794
Secured Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	17,240	16,552
Secured Loans [Member] \| Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	2,024,277	2,004,418
30 - 59 Days Past Due	11,910	5,137
60 - 89 Days Past Due	1,874	6,149
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	58	1,372
Total Past Due	13,842	12,658
Nonaccrual Loans	17,240	16,552
Loans Receivable, Net	2,055,359	2,033,628
Unsecured Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	189	247
Unsecured Loans [Member] \| Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	78,351	79,661
30 - 59 Days Past Due	492	185
60 - 89 Days Past Due	120	0
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	67	0
Total Past Due	679	185
Nonaccrual Loans	189	247
Loans Receivable, Net	79,219	80,093
One-to-Four Family Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	4,429	2,822
One-to-Four Family Residential [Member] \| Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	164,962	167,197
30 - 59 Days Past Due	771	1,700
60 - 89 Days Past Due	124	45
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	21	0
Total Past Due	916	1,745
Nonaccrual Loans	4,429	2,822
Loans Receivable, Net	170,307	171,764
Commercial Land [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	1,616	821
Commercial Land [Member] \| Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	186,904	187,470
30 - 59 Days Past Due	4,303	1,454
60 - 89 Days Past Due	355	34
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	264	0
Total Past Due	4,922	1,488
Nonaccrual Loans	1,616	821
Loans Receivable, Net	193,442	189,779
Income Property Multifamily [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	887	3,200
Income Property Multifamily [Member] \| Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	1,305,595	1,294,982
30 - 59 Days Past Due	2,502	3,031
60 - 89 Days Past Due	560	786
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	0
Total Past Due	3,062	3,817
Nonaccrual Loans	887	3,200
Loans Receivable, Net	1,309,544	1,301,999
Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	1,995	3,826
Owner Occupied [Member] \| Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	841,551	839,689
30 - 59 Days Past Due	2,206	937
60 - 89 Days Past Due	435	289
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	0
Total Past Due	2,641	1,226
Nonaccrual Loans	1,995	3,826
Loans Receivable, Net	846,187	844,741
Land And Acquisition [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	871	95
Land And Acquisition [Member] \| Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	15,860	15,462
30 - 59 Days Past Due	67	953
60 - 89 Days Past Due	0	0
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	0
Total Past Due	67	953
Nonaccrual Loans	871	95
Loans Receivable, Net	16,798	16,510
Residential Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	1,263	370
Residential Construction [Member] \| Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	104,378	97,821
30 - 59 Days Past Due	0	326
60 - 89 Days Past Due	0	0
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	4	4
Total Past Due	4	330
Nonaccrual Loans	1,263	370
Loans Receivable, Net	105,645	98,521
Income Property Multifamily Construction [Member] \| Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	62,958	73,783
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	0	0
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	0
Total Past Due	0	0
Nonaccrual Loans	0	0
Loans Receivable, Net	62,958	73,783
Owner Occupied Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	470
Owner Occupied Construction [Member] \| Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	54,969	57,470
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	0	994
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	0
Total Past Due	0	994
Nonaccrual Loans	470	480
Loans Receivable, Net	55,439	58,944
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	2,868	2,939
Consumer Portfolio Segment [Member] \| Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	331,566	341,032
30 - 59 Days Past Due	1,509	933
60 - 89 Days Past Due	193	118
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	22	10
Total Past Due	1,724	1,061
Nonaccrual Loans	2,868	2,939
Loans Receivable, Net	$ 336,158	$ 345,032

Financing receivables that are less than 60 days past due but more than 29 days past due.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 7A

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953401-111524

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Financing receivables that are less than 90 days past due but more than 59 days past due.

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Financing receivables that are current.

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Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 7

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5111-111524

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes loans held for sale. Excludes loans and leases covered under loss sharing agreements.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Subparagraph a

-Article 9

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

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