Intangible Assets, Net (Tables)

3 Months Ended

Mar. 31, 2013

Goodwill And Intangible Assets Disclosure [Abstract]

Summary of Intangible Assets

Intangible assets, net are summarized as follows:

	March 31,			December 31,
	2013			2012
($ in thousands)
Definite-lived intangible assets:
Investment contracts	$	184,871		$	197,704
Accumulated amortization		(169,629	)		(181,409	)
Definite-lived intangible assets, net		15,242			16,295
Indefinite-lived intangible assets		32,416			32,416
Total intangible assets, net	$	47,658		$	48,711

Schedule of Activity in Intangible Assets

Activity in intangible assets, net is as follows:

	Three Months Ended March 31,
	2013			2012
($ in thousands)
Intangible assets, net
Balance, beginning of period	$	48,711		$	52,096
Amortization		(1,053	)		(955	)
Balance, end of period	$	47,658		$	51,141