Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill [Table Text Block]

The change in goodwill during the year is as follows (dollars in thousands):

	2016		2015
Beginning of year	$	145,909	$	145,909
Acquired goodwill		-		-
Impairment		-		-
End of year	$	145,909	$	145,909

Intangible Assets Disclosure [Text Block]

The table below provides information regarding the carrying amounts and accumulated amortization of total amortized intangible assets as of the dates set forth below. 

	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
	(dollars in thousands)
As of December 31, 2016:
Core deposit intangibles	$	6,011	$	(2,923)	$	3,088
As of December 31, 2015:
Core deposit intangibles	$	6,011	$	(2,103)	$	3,908

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

Aggregate amortization expense was $820,000, $917,000 and $507,000 for 2016, 2015 and 2014, respectively. Estimated amortization expense for each of the next five years (in thousands):

2017	$	724
2018		627
2019		531
2020		434
2021		338