Goodwill, Core Deposit Premium and Other Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Gross Carrying Amount and Accumulated Amortization of Other Intangible Assets

The gross carrying amount of these intangible assets and the associated accumulated amortization at September 30, 2017, and December 31, 2016, are presented in the table below, in thousands:

	September 30, 2017						December 31, 2016
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Amortizing intangible assets:
Core deposit intangibles	$	62,008	$	25,271	$	36,737	$	43,504	$	21,049	$	22,455
Customer relationship intangibles	1,177		886		291		1,177		857		320
Mortgage servicing rights	41,903		18,161		23,742		50,467		18,379		32,088
Commercial servicing rights	6,719		3,862		2,857		6,504		2,814		3,690
Total	$	111,807	$	48,180	$	63,627	$	101,652	$	43,099	$	58,553

Schedule of Estimated Future Amortization Expense of Amortizable Intangible Assets

The following table shows the estimated future amortization expense for amortizable intangible assets, in thousands:

	Core Deposit Intangibles		Customer Relationship Intangibles		Mortgage Servicing Rights		Commercial Servicing Rights		Total
Three months ending December 31, 2017	$	1,815	$	10	$	2,463	$	184	$	4,472
Year ending December 31,
2018	6,712		39		5,319		701		12,771
2019	5,915		38		4,560		566		11,079
2020	5,191		37		3,800		442		9,470
2021	4,425		35		3,040		380		7,880
2022	3,391		34		2,280		307		6,012
Thereafter	9,288		98		2,280		277		11,943
Total	$	36,737	$	291	$	23,742	$	2,857	$	63,627

Summary of Changes in Servicing Rights

The following table summarizes, in thousands, the changes in capitalized commercial servicing rights for the nine months ended September 30, 2017, and September 30, 2016:

	2017			2016
Balance at January 1,	$	3,690		$	4,611
Purchased commercial servicing rights	—			190
Originations	215			533
Amortization	(1,077		)	(1,229		)
Valuation allowance on commercial servicing rights	29			(41		)
Balance at period end	$	2,857		$	4,064
Fair value of commercial servicing rights	$	3,458		$	4,397
Commercial servicing rights, net to servicing portfolio	1.98		%	2.38		%

The following table summarizes, in thousands, the changes in capitalized mortgage servicing rights for the nine months ended September 30, 2017, and September 30, 2016:

	2017			2016
Balance at January 1,	$	32,088		$	30,314
Originations	5,778			9,323
Amortization	(7,184		)	(7,795		)
Sale of mortgage servicing rights	(6,940		)	—
Balance at period end	$	23,742		$	31,842
Fair value of mortgage servicing rights	$	35,002		$	38,127
Mortgage servicing rights, net to servicing portfolio	0.67		%	0.75		%

Schedule of Servicing Asset at Fair Value and Amortized Cost

The following table summarizes, in thousands, the book value, the fair value of each tranche of the commercial servicing rights and any recorded valuation allowance at each respective subsidiary at September 30, 2017, and December 31, 2016:

September 30, 2017	Book Value- Less than 20 Years		Fair Value- Less than 20 Years		Impairment- Less than 20 Years		Book Value- More than 20 Years		Fair Value- More than 20 Years		Impairment- More than 20 Years
Citywide Banks	$	12	$	15	$	—	$	54	$	61	$	—
Premier Valley Bank	95		124		—		317		313		4
Wisconsin Bank & Trust	515		688		—		1,868		2,257		—
Total	$	622	$	827	$	—	$	2,239	$	2,631	$	4
December 31, 2016
Citywide Banks	$	19	$	23	$	—	$	107	$	114	$	—
Premier Valley Bank	156		180		—		359		326		33
Wisconsin Bank & Trust	833		997		—		2,249		2,487		—
Total	$	1,008	$	1,200	$	—	$	2,715	$	2,927	$	33