Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

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Amount of recovery of financing receivables doubtful of collection that were previously charged off.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount of expense related to estimated loss from loan and lease transactions.

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Loans - Schedule of Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Sep. 30, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Allowance for loan losses
Allowance for loan losses, beginning of period			$ 40,686	$ 32,765
Provision	$ 1,200	$ 5,400	(2,101)	6,420	$ (4,155)
Charge-offs			(7,804)	(1,296)
Net recoveries of impaired loans			2,512	2,797
Allowance for loan losses, end of period		40,686	33,293	40,686	32,765
Commercial
Allowance for loan losses
Allowance for loan losses, beginning of period			24,215	14,614
Provision			(2,334)	9,950
Charge-offs			(7,767)	(588)
Net recoveries of impaired loans			1,284	239
Allowance for loan losses, end of period		24,215	15,398	24,215	14,614
Real estate - mortgage
Allowance for loan losses
Allowance for loan losses, beginning of period			10,372	12,463
Provision			1,072	(3,017)
Charge-offs				(186)
Net recoveries of impaired loans			31	1,112
Allowance for loan losses, end of period		10,372	11,475	10,372	12,463
Construction and land
Allowance for loan losses
Allowance for loan losses, beginning of period			2,111	2,316
Provision			(1,279)	(1,253)
Charge-offs				(107)
Net recoveries of impaired loans			1,165	1,155
Allowance for loan losses, end of period		2,111	1,997	2,111	2,316
Consumer
Allowance for loan losses
Allowance for loan losses, beginning of period			2,592	2,329
Provision			216	374
Charge-offs			(37)	(130)
Net recoveries of impaired loans			32	19
Allowance for loan losses, end of period		2,592	2,803	2,592	2,329
Other
Allowance for loan losses
Allowance for loan losses, beginning of period			643	488
Provision			302	168
Charge-offs				(285)
Net recoveries of impaired loans				272
Allowance for loan losses, end of period		643	945	643	488
Unallocated
Allowance for loan losses
Allowance for loan losses, beginning of period			753	555
Provision			(78)	198
Allowance for loan losses, end of period		$ 753	$ 675	$ 753	$ 555