5. INVESTMENT SECURITIES (Detail) - (Table 1) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Collateralized Debt Obligations [Member]
Debt securities:
Amortized Cost	$ 205,981	$ 195,444
Gross Unrealized Gains	5,253	5,661
Gross Unrealized Losses	(427)	(590)
Available-for-sale securities	210,807	200,515
Equity securities:
Gross Unrealized Gains	5,253	5,661
Gross Unrealized Losses	(427)	(590)
Available-for-sale securities	210,807	200,515
US Government Corporations and Agencies Securities [Member]
Debt securities:
Amortized Cost	27,620	27,682
Gross Unrealized Gains	1,761	1,974
Available-for-sale securities	29,381	29,656
Equity securities:
Gross Unrealized Gains	1,761	1,974
Available-for-sale securities	29,381	29,656
Corporate Bond Securities [Member]
Debt securities:
Amortized Cost	1,506	1,507
Gross Unrealized Gains	100	87
Available-for-sale securities	1,606	1,594
Equity securities:
Gross Unrealized Gains	100	87
Available-for-sale securities	1,606	1,594
Equity Securities, Industry [Member]
Debt securities:
Amortized Cost	64	64
Gross Unrealized Gains	23	10
Available-for-sale securities	87	74
Equity securities:
Amortized Cost	64	64
Gross Unrealized Gains	23	10
Available-for-sale securities	87	74
Securities Investment [Member]
Debt securities:
Gross Unrealized Gains	7,137	7,732
Gross Unrealized Losses	(427)	(590)
Available-for-sale securities	241,881	231,839
Equity securities:
Gross Unrealized Gains	7,137	7,732
Gross Unrealized Losses	(427)	(590)
Available-for-sale securities	241,881	231,839
Amortized Cost	$ 235,171	$ 224,697

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.

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

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- Definition

This item represents the gross unrealized gains for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities.

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