Securities Financing (Tables)

3 Months Ended

Mar. 31, 2016

Equity [Abstract]

Summary of Redeemable Preferred Stock

	SeriesE Redeemable Preferred				Series F Redeemable Preferred
	Shares		Amount		Shares		Amount
	(Dollars In Thousands)
Balance at December 31, 2015		210,000	$	177,272		1	$	—
Accretion relating to liquidation preference on    preferred stock		—		725		—		—
Accretion for discount and issuance costs on    preferred stock		—		1,518		—		—
Accumulated dividend		—		7,350		—		—
Balance at March 31, 2016		210,000	$	186,865		1	$	—