Securities Sold Under Agreements to Repurchase (Tables)

12 Months Ended

Dec. 31, 2012

Securities Sold Under Agreements to Repurchase, Other Borrowed Funds and Subordinated Debentures And Deposits [Abstract]

Summary of securities sold under agreements to repurchase

The following is a summary of securities sold under agreements to repurchase as of December 31,

	2012			2011			2010
	(dollars in thousands)
Amount outstanding at December 31	$	191,390		$	143,320		$	108,550
Weighted average rate at December 31		0.17	%		0.24	%		0.36	%
Maximum amount outstanding at any month end	$	213,730		$	152,267		$	239,830
Daily average balance outstanding during the year	$	174,624		$	129,137		$	133,080
Weighted average rate during the year		0.21	%		0.29	%		0.43	%