SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE (Tables)

12 Months Ended

Dec. 31, 2016

Schedule Of Repurchase Agreements [Table Text Block]

		December, 31
		2016		2015
	(Dollars in thousands)
	Repurchase agreements, interest ranging from 1.96% to 2.83%
	(December 31, 2015: 1.96% to 3.41%) (1)(2)	$	300,000	$	700,000
(1)	Reported net of securities purchased under agreements to repurchase (reverse repurchase agreements) by counterparty, when applicable, pursuant to ASC 210-20-45-11.
(2)	As of December 31, 2016, includes $200 million that have an average rate of 2.11% and that are callable by lenders before their contractual maturities at various dates beginning on January 19, 2017. Subsequent to December 31, 2016, no lender has exercised its call option on repurchase agreements. In addition, $100 million is tied to variable rates.

Schedule of Repurchase Agreement Maturity [Table Text Block]

Repurchase agreements mature as follows:
		December 31, 2016
	(In thousands)
	Over six months to one year	$	100,000
	Over five years		200,000
	Total	$	300,000

Schedule of Securities Sold Under Repurchase Agreements [Table Text Block]

The following securities were sold under agreements to repurchase:
		December 31, 2016
		Amortized				Approximate	Weighted
		Cost of				Fair Value	Average
		Underlying		Balance of		of Underlying	Interest Rate
Underlying Securities		Securities		Borrowing		Securities	of Security
(In thousands)
U.S. government-sponsored agencies	$	126,205	$	123,175	$	125,417		1.30	%
Mortgage-backed securities		215,352		176,825		213,973		2.20	%
Total	$	341,557	$	300,000	$	339,390
Accrued interest receivable	$	1,400

		December 31, 2015
		Amortized				Approximate	Weighted
		Cost of				Fair Value	Average
		Underlying		Balance of		of Underlying	Interest Rate
Underlying Securities		Securities		Borrowing		Securities	of Security
(In thousands)
U.S. government-sponsored agencies	$	233,175	$	211,010	$	230,603	1.47	%
Mortgage-backed securities		564,595		488,990		562,959	2.18	%
Total	$	797,770	$	700,000	$	793,562
Accrued interest receivable	$	2,145

Repurchase Agreements Grouped by Counterparty [Table Text Block]

Repurchase agreements as of December 31, 2016, grouped by counterparty, were as follows:
	(Dollars in thousands)			Weighted-Average
	Counterparty	Amount		Maturity (In Months)
	Dean Witter / Morgan Stanley	$	100,000	10
	JP Morgan Chase		200,000	61
		$	300,000