Short-Term Borrowings (Tables)

12 Months Ended

Dec. 31, 2013

Short-term Debt [Abstract]

Summary of short-term borrowings

A summary of short-term borrowings, which consisted solely of securities sold under agreements to repurchase, follows:

	2013			2012			2011
	(Dollars in thousands)
Securities sold under agreements to repurchase:
Ending balance at December 31	$	327,428		$	310,463		$	303,786
Weighted average interest rate at December 31	0.15		%	0.14		%	0.12		%
Average amount outstanding during year	$	337,649		$	312,729		$	287,176
Weighted average interest rate during year	0.14		%	0.14		%	0.18		%
Maximum balance outstanding at any month-end	$	357,976		$	335,193		$	313,626