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Supplemental Cash Flow Disclosures - Non-cash Investing and Financing Activities (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Supplemental Cash Flow Information [Abstract]
Loans Transferred to Other Real Estate Owned and Repossessions	$ 1,292	$ 1,207
Cash paid during the period for:
Interest	5,108	7,211
Non-cash investing and financing activities:
Loans transferred from held to maturity to held for sale	716	16,613
Loans Sold, Not Settled	0	2,640
Gross increase (decrease) in market value adjustment to securities available for sale	12,459	(2,411)
Investments committed to purchase not settled	2,522	0
Unsettled treasury stock repurchases	$ 233	$ 0

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Gross increase in market value adjustment to securities available for sale.

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Unsettled treasury stock repurchases

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The amount of cash paid for interest during the period.

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-Publisher FASB

-Name Accounting Standards Codification

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The amount of investments that an Entity acquires in a noncash (or part noncash) acquisition. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Value of loans and leases held in the entity's portfolio transferred to loans and leases held-for-sale in noncash transactions.

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