Supplemental Cash Flow Disclosures - Non-cash Investing and Financing Activities (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash paid during the period for:
Interest	$ 3,832	$ 4,674
Income Taxes Paid, Net	1,039	1,000
Non-cash investing and financing activities:
Loans Transferred to Other Real Estate Owned and Repossessions	958	1,355
Fair value of loans transferred from held to maturity to held for sale	3,613	0
Gross increase in market value adjustment to securities available for sale	1,892	10,070
Gross (decrease) increase in market value adjustment to securities derivatives	(438)	1,720
Investments committed to purchase not settled	498	600
Stock Issued	$ 2,258	$ 0