Acquisitions (Tables)

6 Months Ended

Jun. 30, 2017

Business Combinations [Abstract]

Schedule of acquired loans with credit impairment

Contractually required principal and interest payments	$	48,041
Contractual cash flows not expected to be collected ("non-accretable discount")	23,376
Cash flows expected to be collected	24,665
Interest component of cash flows expected to be collected ("accretable discount")	1,901
Fair value of acquired credit-impaired loans	$	22,764

The following table displays the outstanding unpaid balances and accrual status of loans acquired with credit impairment as of June 30, 2017 and 2016:    

As of June 30,	2017		2016
Outstanding balance	$	60,195	$	31,979
Carrying value
Loans on accrual status	39,359		20,140
Total carrying value	$	39,359	$	20,140

The following table summarizes changes in the accretable yield for loans acquired credit impaired for the three and six months ended June 30, 2017 and 2016:

	Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
Beginning balance	$	6,432		$	6,678		$	6,803		$	6,713
Additions	1,929			—			1,929			—
Accretion income	(668		)	(615		)	(1,273		)	(1,229		)
Reductions due to exit events	(418		)	(158		)	(988		)	(305		)
Reclassifications from nonaccretable differences	375			—			1,179			726
Ending balance	$	7,650		$	5,905		$	7,650		$	5,905

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

	As Recorded			Fair Value				As Recorded
As of May 30, 2017	by Cascade			Adjustments				by the Company
Assets acquired:
Cash and cash equivalents	$	246,804		$	—			$	246,804
Investment securities	476,733			4,876			(1)	481,609
Loans held for investment	2,111,786			(31,703		)	(2)	2,080,083
Mortgage loans held for sale	10,253			—				10,253
Allowance for loan loss	(23,974		)	23,974			(3)	—
Premises and equipment	46,554			1,315			(4)	47,869
Other real estate owned ("OREO")	1,268			—				1,268
Core deposit intangible	—			47,950			(5)	47,950
Deferred tax assets	32,232			(22,336		)	(6)	9,896
Other assets	113,915			1,378			(7)	115,293
Total assets acquired	3,015,571			25,454				3,041,025
Liabilities assumed:
Deposits	2,669,910			(934		)	(8)	2,668,976
Accounts Payable and Accrued Expense	62,150			408			(9)	62,558
Total liabilities assumed	2,732,060			(526		)		2,731,534
Net assets acquired	$	283,511		$	24,928			309,491
Consideration paid:
Cash								155,029
Class A common stock								385,969
Total consideration paid								540,998
Goodwill								$	231,507

Schedule of Acquired Loans not Deemed to Have Credit Impairment [Table Text Block]

Contractually required principal and interest payments	$	2,098,155
Contractual cash flows not expected to be collected due to projected prepayment	23,387
Fair value at acquisition	2,067,572

Business Acquisition, Pro Forma Information [Table Text Block]

	Three months ended June 30,				Six months ended June 30,
	2017		2016		2017		2016
Interest income	$	103,248	$	94,698	$	203,326	$	189,772
Non-interest income	41,314		44,780		77,897		78,286
Total revenues	$	144,562	$	139,478	$	281,223	$	268,058
Net income	$	29,409	$	29,534	$	58,709	$	23,716
EPS - basic	$	0.50	$	0.53	$	1.02	$	0.43
EPS - diluted	0.50		0.53		1.01		0.42