Supplemental Cash Flow Disclosures - Non-cash Investing and Financing Activities (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash paid during the period for:
Interest	$ 9,583	$ 7,893
Income Taxes Paid, Net	10,500	4,000
Non-cash investing and financing activities:
Loans Transferred to Other Real Estate Owned and Repossessions	2,632	2,315
Fair value of loans transferred from held to maturity to held for sale	3,573	3,071
Gross increase in market value adjustment to securities available for sale	13,845	6,036
Gross increase in market value adjustment to derivatives	2,053	662
Investments committed to purchase not settled	1,946	1,817
Unsettled Bank Owned Life Insurance Proceeds	$ 523	$ 0