SECURITIES (Tables)

12 Months Ended

Dec. 31, 2014

Investments Debt And Equity Securities [Abstract]

Components of Available for Sale Portfolio

The components of securities are as follows:

	December 31, 2014
			Gross		Gross
	Amortized		unrealized		unrealized			Fair
	cost		gains		losses			value
	(Dollars in thousands)
Available for Sale
U.S. Treasury and government sponsored entities' securities	$	232,225	$	184	$	(4,452	)	$	227,957
Mortgage-backed GSE securities: residential		274,204		331		(2,702	)		271,833
Total	$	506,429	$	515	$	(7,154	)	$	499,790

	December 31, 2013
			Gross		Gross
	Amortized		unrealized		unrealized			Fair
	cost		gains		losses			value
	(Dollars in thousands)
Available for Sale
U.S. Treasury and government sponsored entities' securities	$	247,863	$	—	$	(25,570	)	$	222,293
Equity securities		101		344		—			445
Mortgage-backed GSE securities: residential		303,435		31		(15,198	)		288,268
Total	$	551,399	$	375	$	(40,768	)	$	511,006

Debt Securities Available for Sale by Contractual Maturity

Debt securities available for sale by contractual maturity, repricing or expected call date are shown below:

	December 31, 2014
	Amortized cost		Fair value
	(Dollars in thousands)
Due in one year or less	$	—	$	—
Due after one year through five years		—		—
Due after five years through ten years		204,851		201,171
Due after ten years		27,374		26,786
Mortgage-backed GSE securities: residential		274,204		271,833
Total	$	506,429	$	499,790

Summary of Proceeds, Gross Realized Gains, Losses and Impairment Charges of Available for Sale Securities

Proceeds, gross realized gains, losses and impairment charges of available for sale securities were as follows:

	2014		2013			2012
	(Dollars in thousands)
Proceeds	$	14,595	$	137,467		$	343,000
Gross gains		444		2,712			6,325
Gross losses		—		(135	)		—
Impairment charges		—		—			(13	)

Securities Available for Sale in Unrealized Loss Position

Securities available for sale that have been in an unrealized loss position for less than twelve months or twelve months or more are as follows at December 31, 2014:

	Less than 12 months					12 months or more					Total
	Fair		Unrealized loss			Fair		Unrealized loss			Fair		Unrealized loss
	value		Loss			value		Loss			value		Loss
	(Dollars in thousands)
Description of securities:
U.S. Treasury and government sponsored entities	$	—	$	—		$	214,495	$	(4,452	)	$	214,495	$	(4,452	)
Mortgage-backed GSE securities: residential		4,625		(40	)		193,434		(2,662	)		198,059		(2,702	)
Total temporarily impaired securities	$	4,625	$	(40	)	$	407,929	$	(7,114	)	$	412,554	$	(7,154	)

Securities available for sale in an unrealized loss position are as follows at December 31, 2013:

	Less than 12 months					12 months or more					Total
	Fair value		Unrealized loss			Fair value		Unrealized loss			Fair value		Unrealized loss
	(Dollars in thousands)
Description of securities:
U.S. Treasury and government sponsored entities	$	193,746	$	(21,360	)	$	28,046	$	(4,210	)	$	221,792	$	(25,570	)
Mortgage-backed GSE securities: residential		240,201		(10,680	)		47,319		(4,518	)		287,520		(15,198	)
Total temporarily impaired securities	$	433,947	$	(32,040	)	$	75,365	$	(8,728	)	$	509,312	$	(40,768	)