Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2014

Goodwill and Other Intangible Assets [Abstract]

Summary of core deposit intangibles and other intangibles

	Three Months Ended		Year Ended
	March 31, 2014		December 31, 2013
		($ in Thousands)
Core deposit intangibles:
Gross carrying amount	$	36,230	$	36,230
Accumulated amortization		(32,336)		(31,565)
Net book value	$	3,894	$	4,665
Amortization during the period	$	771	$	3,122
Other intangibles:
Gross carrying amount	$	19,283	$	19,283
Accumulated amortization		(12,984)		(12,764)
Net book value	$	6,299	$	6,519
Amortization during the period	$	220	$	921

Summary of changes in balance of mortgage servicing rights asset and mortgage servicing rights valuation allowance

		Three Months Ended			Year Ended
		March 31, 2014			December 31, 2013
			($ in Thousands)
Mortgage servicing rights:
Mortgage servicing rights at beginning of period		$	64,193		$	61,425
	Additions		1,725			18,256
	Amortization		(2,725)			(15,488)
Mortgage servicing rights at end of period		$	63,193		$	64,193
Valuation allowance at beginning of period			(913)			(15,476)
	Recoveries, net		156			14,563
Valuation allowance at end of period			(757)			(913)
Mortgage servicing rights, net		$	62,436		$	63,280
Fair value of mortgage servicing rights		$	71,987		$	74,444
Portfolio of residential mortgage loans serviced for others (“servicing portfolio”)			8,084,000			8,084,000
Mortgage servicing rights, net to servicing portfolio			0.77	%		0.78	%
Mortgage servicing rights expense (1)		$	2,569		$	925

Summary of estimated future amortization expense

	Core Deposit		Other		Mortgage Servicing
Estimated amortization expense:	Intangibles		Intangibles		Rights
		($ in Thousands)
Nine months ending December 31, 2014	$	2,097	$	659	$	7,685
Year ending December 31, 2015		1,404		839		8,777
Year ending December 31, 2016		281		803		7,345
Year ending December 31, 2017		112		770		6,171
Year ending December 31, 2018		―		740		5,197
Year ending December 31, 2019		―		441		4,397
Beyond 2019		―		2,047		23,621
Total Estimated Amortization Expense	$	3,894	$	6,299	$	63,193