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Investment Securities (Tables)

3 Months Ended

Mar. 31, 2014

Investments Debt And Equity Securities [Abstract]

Amortized Cost and Estimated Fair Value of Investment Securities

The majority of securities held are publicly traded, and the estimated fair values were obtained from an independent pricing service based upon market quotes.

		March 31, 2014
		Amortized Cost				Gross Unrealized Holding Gain				Gross Unrealized Holding Loss				Fair Value				Total Percent
		(Dollars in thousands)
Investment securities available-for-sale:
Government agency		$	335,412			$	3			$	(18,586	)		$	316,829				11.52	%
Residential mortgage-backed securities			1,511,226				16,365				(15,415	)			1,512,176				54.99	%
CMO’s / REMIC’s - residential			344,470				7,466				(563	)			351,373				12.78	%
Municipal bonds			545,259				21,588				(2,162	)			564,685				20.53	%
Other securities			5,000				—				—				5,000				0.18	%
Total		$	2,741,367			$	45,422			$	(36,726	)		$	2,750,063				100.00	%

		December 31, 2013
		Amortized Cost				Gross Unrealized Holding Gain				Gross Unrealized Holding Loss				Fair Value				Total Percent
		(Dollars in thousands)
Investment securities available-for-sale:
Government agency		$	350,378			$	22			$	(23,875	)		$	326,525				12.26	%
Residential mortgage-backed securities			1,391,631				13,100				(24,788	)			1,379,943				51.81	%
CMO’s / REMIC’s - residential			361,573				6,576				(1,974	)			366,175				13.75	%
Municipal bonds			571,145				18,839				(3,893	)			586,091				22.00	%
Other securities			5,000				—				(92	)			4,908				0.18	%
Total		$	2,679,727			$	38,537			$	(54,622	)		$	2,663,642				100.00	%

Summary of Continuous Unrealized Loss Position of Securities

The tables below show the Company’s investment securities’ gross unrealized losses and fair value by investment category and length of time that individual securities have been in a continuous unrealized loss position at March 31, 2014 and December 31, 2013. Management has reviewed individual securities to determine whether a decline in fair value below the amortized cost basis is other-than-temporary.

		March 31, 2014
		Less Than 12 Months								12 Months or Longer								Total
		Fair Value				Gross Unrealized Holding Losses				Fair Value				Gross Unrealized Holding Losses				Fair Value				Gross Unrealized Holding Losses
		(Dollars in thousands)
Available-for-sale:
Government agency		$	143,534			$	6,842			$	164,282			$	11,744			$	307,816			$	18,586
Residential mortgage-backed securities			542,041				7,062				148,952				8,353				690,993				15,415
CMO / REMICs - residential			52,196				539				15,693				24				67,889				563
Municipal bonds			16,068				865				28,076				1,297				44,144				2,162
Other securities			—				—				—				—				—				—
Total		$	753,839			$	15,308			$	357,003			$	21,418			$	1,110,842			$	36,726

		December 31, 2013
		Less Than 12 Months								12 Months or Longer								Total
		Fair Value				Gross Unrealized Holding Losses				Fair Value				Gross Unrealized Holding Losses				Fair Value				Gross Unrealized Holding Losses
		(Dollars in thousands)
Available-for-sale:
Government agency		$	267,936			$	20,514			$	38,563			$	3,361			$	306,499			$	23,875
Residential mortgage-backed securities			851,621				23,313				22,999				1,475				874,620				24,788
CMO / REMICs - residential			104,322				1,780				17,747				194				122,069				1,974
Municipal bonds			47,116				3,359				10,338				534				57,454				3,893
Other securities			4,908				92				—				—				4,908				92
Total		$	1,275,903			$	49,058			$	89,647			$	5,564			$	1,365,550			$	54,622

Amortized Cost and Fair Value of Debt Securities by Contractual Maturity

Mortgage-backed securities and CMO/REMICs are included in maturity categories based upon estimated prepayment speeds.

		March 31, 2014
		Amortized Cost				Fair Value				Weighted- Average Yield
		(Dollars in thousands)
Available-for-sale:
Due in one year or less		$	113,183			$	116,202				3.25	%
Due after one year through five years			1,718,930				1,750,370				2.56	%
Due after five years through ten years			865,160				840,172				2.14	%
Due after ten years			44,094				43,319				3.57	%
Total		$	2,741,367			$	2,750,063				2.47	%

X

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-Publisher FASB

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-Name Accounting Standards Codification

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-Publisher FASB

-Name Accounting Standards Codification

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Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments.

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For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

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