Supplemental Cash Flow Disclosures - Non-cash Investing and Financing Activities (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash paid during the period for:
Interest	$ 10,024	$ 12,990
Income Taxes Paid, Net	3,700	2,200
Non-cash investing and financing activities:
Loans transferred from held to maturity to held for sale	3,035	20,135
Loans Transferred to Other Real Estate Owned and Repossessions	2,726	7,371
Gross increase (decrease) in market value adjustment to securities available for sale	22,397	(27,625)
Investments committed to purchase not settled	2,732	0
Unsettled treasury stock repurchases	38	0
Unsettled bank owned life insurance proceeds	$ 1,062	$ 0