Investment Securities - Additional Information (Detail) - USD ($) $ in Thousands |
12 Months Ended | ||
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Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
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Schedule of Available-for-sale Securities [Line Items] | |||
Maturity of contract | less than one year | ||
Approximate year of maturity | 30 years | ||
Gross Unrealized Gains (Losses) | $ 18,546 | $ 16,477 | |
Securities available for sale | 778,612 | 886,560 | |
Amortized Cost | 790,082 | 891,111 | |
Gain (loss) on sales of securities | 617 | (153) | $ 550 |
Available-for-sale securities pledged as collateral | 445,800 | 416,100 | |
Held-to-maturity securities pledged as collateral | 119,200 | $ 45,700 | |
US Government Agencies Debt Securities [Member] | |||
Schedule of Available-for-sale Securities [Line Items] | |||
Sale of available securities | 75,000 | ||
Gain (loss) on sales of securities | $ (300) |
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- Definition Contractual Maturity Of Securities No definition available.
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- Definition Sales Of Available For Sale Securities No definition available.
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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of unrealized loss before deducting unrealized gain on investments in available-for-sale securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The fair value of available-for-sale securities that serve as collateral for borrowings. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Description of how prepayments are considered in determination of contractual cash flows and cash flows expected to be collected for the loan or debt security. This relates to loans and debt securities for which at acquisition it was probable that the investor would be unable to collect all contractually required payments receivable or all cash flows expected at acquisition. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The net gain (loss) realized from the sale, exchange, redemption, or retirement of securities, not separately or otherwise categorized as trading, available-for-sale, or held-to-maturity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The carrying amount of held-to-maturity securities that serve as collateral for borrowings. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Details
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