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Mergers and Acquisitions - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified				0 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Apr. 08, 2014 Subsequent Event [Member]	Oct. 12, 2013 PVF Capital Corp (PVF) [Member]	Feb. 15, 2014 BCSB Bancorp, Inc. (BCSB) [Member]	Apr. 06, 2013 Annapolis Bancorp, Inc. [Member]
Business Acquisition [Line Items]
Assets acquired as a result of merger			$ 390,000	$ 686,401	$ 596,795	$ 394,363
Value of acquisition			94,000
Exchange ratio			1.781
Loans acquired as a result of merger				512,566	308,389	256,199
Deposits acquired as a result of merger				627,046	532,197	349,370
Value of acquisition				109,856	80,554	56,300
Common shares issued				8,893,598	6,730,597	4,641,412
Common shares acquired				26,119,398	3,235,961	4,060,802
Goodwill recorded as a result of merger	805,788	764,248		52,085	42,292	35,854
Core deposit intangibles recorded as result of the acquisition				6,867	6,591	3,775
Contingent cash payment due to collection of loan						$ 609
Contingent cash payment due to collection of loan, per share						$ 0.15
Warrants converted to purchase common stock						342,564
Warrant expiration date						Jan. 30, 2019
Warrant exercise price						3.57

X

- Definition

Reflects the per share amount of a contingent cash payment made in conjunction with a business combination.

+ References

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Reflects the amount of a contingent cash payment made in conjunction with a business combination.

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- Definition

Business acquisition exchange ratio.

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- Definition

Reflects the amount of the core deposit intangible asset recorded as a result of the business combination.

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- Definition

Represents the fair value of deposits acquired in a business combination.

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- Definition

Reflects the number of shares of common stock exchanged by the acquired entity for common stock of the reporting entity.

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- Definition

Expiration date of warrants held.

+ References

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

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- Definition

Number of shares of equity interests issued or issuable to acquire entity.

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- Definition

For receivables acquired in a business combination, excluding certain loans and debt securities acquired in a transfer (as defined), this element represents the fair value of the receivables acquired, by major class of receivable, such as loans, direct finance leases (as defined), and any other class of receivables.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of assets acquired at the acquisition date.

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

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Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares.

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- Definition

Carrying (unamortized) amount as of the balance sheet date of deferred policy acquisition costs and value of business acquired (also called present value of future profits).

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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