Offsetting Assets and Liabilities (Tables)

6 Months Ended

Jun. 30, 2013

Offsetting Assets and Liabilities [Abstract]

Offsetting of financial assets

The following table presents offsetting of securities borrowed as of June 30, 2013 and December 31, 2012:

	Gross Amounts of Recognized Assets			Gross Amounts Offset in the Statement of Financial Position		Net Amounts of Assets Presented in the Statement of Financial Position		Financial Instruments		Cash Collateral Pledged		Net Amount
	(in thousands)
June 30, 2013		$	109,406	$	—	$	109,406	$	—	$	109,406	$	—
December 31, 2012		$	106,350	$	—	$	106,350	$	—	$	106,350	$	—

Offsetting of financial liabilities

The following table presents offsetting of securities loaned as of June 30, 2013 and December 31, 2012:

	Gross Amounts of Recognized Liabilities			Gross Amounts Offset in the Statement of Financial Position		Net Amounts of Liabilities Presented in the Statement of Financial Position		Financial Instruments		Cash Collateral Received		Net Amount
	(in thousands)
June 30, 2013		$	44,532	$	—	$	44,532	$	—	$	44,532	$	—
December 31, 2012		$	12,517	$	—	$	12,517	$	—	$	12,517	$	—