Amount of assets acquired at the acquisition date.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (c)

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Minimum contractual interest rate for funds borrowed, under the debt agreement.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(2))

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- Definition

The cash outflow from the repayment of long-term borrowing where a lender is placed in a lien position behind debt having a higher priority of repayment (senior) in case of liquidation of the entity's assets before its maturity.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (b)

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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- Definition

Amount borrowed under the credit facility as of the balance sheet date.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

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- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

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No definition available.

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- Definition

Including the current and noncurrent portions, the carrying value as of the balance sheet date of notes payable to banks, excluding mortgage notes, initially due beyond one year or beyond the operating cycle if longer.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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- Definition

Business Combination, Aggregate Purchase Price

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Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits

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- Definition

Mortgage Loan Originations

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- Definition

Number of Locations

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Subsequent Events (Detail) (USD $)	12 Months Ended			9 Months Ended	0 Months Ended					0 Months Ended	9 Months Ended	0 Months Ended		9 Months Ended	0 Months Ended	9 Months Ended	0 Months Ended	9 Months Ended	0 Months Ended	9 Months Ended	0 Months Ended
Subsequent Events (Detail) (USD $)	Sep. 30, 2013 Surety Financial Services [Member] Subsequent Event [Member]	Oct. 01, 2013 Surety Financial Services [Member] Subsequent Event [Member] locations	Oct. 18, 2013 Diamond Bancorp, Inc [Member] Subsequent Event [Member] locations	Sep. 30, 2013 Revolving Credit Facility [Member]	Nov. 07, 2013 Revolving Credit Facility [Member] Subsequent Event [Member]	Oct. 25, 2013 Revolving Credit Facility [Member] Subsequent Event [Member]	Nov. 07, 2013 Subordinated Note Due May Twenty Nine Two Thousand And Fifteen [Member]	Nov. 07, 2013 Subordinated Note Due May Twenty Nine Two Thousand And Fifteen [Member] Subsequent Event [Member]	Sep. 30, 2013 Notes Payable to Banks [Member]	Nov. 07, 2013 Notes Payable to Banks [Member] Subsequent Event [Member]	Sep. 30, 2013 Base Rate Loan [Member] Base Rate [Member]	Nov. 07, 2013 Base Rate Loan [Member] Base Rate [Member] Subsequent Event [Member]	Nov. 07, 2013 Base Rate Loan [Member] Prime Rate [Member] Subsequent Event [Member]	Sep. 30, 2013 Base Rate Loan [Member] Eurodollar Rate [Member]	Nov. 07, 2013 Base Rate Loan [Member] Eurodollar Rate [Member] Subsequent Event [Member]	Sep. 30, 2013 Base Rate Loan [Member] Federal Funds Rate [Member]	Nov. 07, 2013 Base Rate Loan [Member] Federal Funds Rate [Member] Subsequent Event [Member]	Sep. 30, 2013 Eurodollar Rate Loan [Member] Base Rate [Member]	Nov. 07, 2013 Eurodollar Rate Loan [Member] Base Rate [Member] Subsequent Event [Member]	Sep. 30, 2013 Eurodollar Rate Loan [Member] London Interbank Offered Rate (LIBOR) [Member]	Nov. 07, 2013 Eurodollar Rate Loan [Member] London Interbank Offered Rate (LIBOR) [Member] Subsequent Event [Member]
Subsequent Event [Line Items]
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum											4.00%	3.50%						4.00%	3.50%
Number of locations		5	4
Mortgage Loan Originations	$ 1,000,000,000
Fair value of assets acquired, at the acquisition date			169,000,000
Assumed deposits			140,000,000
Business Combination, Aggregate Purchase Price			3,000,000
Line of Credit Facility, Expiration Date					Nov. 06, 2014	Nov. 24, 2013
Loan agreement with unaffiliated banks, amount				100,000,000	100,000,000
Percentage of commitment fee payment				0.50%	0.375%
Line of credit facility, amount outstanding				0	0
Incremental interest rate over base rate													0.50%	1.50%	1.50%	1.00%	1.00%			3.00%	2.50%
Notes payable									1,000
Repayments of Debt										1,000,000
Early Repayment of Subordinated Debt							$ 10,000,000	$ 10,000,000