Securities Purchased Under Agreements To Resell (Tables)

12 Months Ended

Dec. 31, 2011

Securities Purchased Under Agreements To Resell [Abstract]

Securities Purchased Under Agreements To Resell

	2011			2010
	(In thousands)
Balance, December 31	$	—		$	110,000
Annualized weighted-average interest rate, December 31		0.00	%		0.20	%
Daily average amount outstanding during the year	$	84,493		$	6,932
Weighted-average interest rate for the year		0.10	%		0.20	%
Maximum amount outstanding at any month end	$	255,000		$	110,000