Loans and Allowance for Loan and Lease Losses - ALLL Activity (Details) - USD ($) $ in Thousands		12 Months Ended
Feb. 28, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Allocation of the allowance to various segments in the loan portfolio
Balance, at the beginning of the period		$ 16,802	$ 17,859	$ 18,118
Charge-offs		(449)	(1,914)	(2,026)
Recoveries		1,099	857	1,767
Balance, at the end of the period		17,452	16,802	17,859
Amount of allowance attributed to:
Allowance for loan and lease losses individually evaluated for impairment			254	1,771
Allowance for loan and lease losses collectively evaluated for impairment		17,119	15,031
Allowance for Loans acquired with deteriorated credit quality		79
Recorded investment in loan individually evaluated for impairment		16,303	16,390
Recorded investment in loan collectively evaluated for impairment		1,222,202	1,166,752
Recorded investment in loans acquired with deteriorated credit quality		8,775	10,341
Total gross loans held for investment		1,247,280	1,193,483
Reserve for off-balance sheet commitments		500	500
Non-PCI Loans
Allocation of the allowance to various segments in the loan portfolio
Balance, at the beginning of the period		16,802
Balance, at the end of the period		17,373	16,802
Amount of allowance attributed to:
Total gross loans held for investment		1,238,505	1,183,183
PCI loans
Allocation of the allowance to various segments in the loan portfolio
Balance, at the end of the period		79
Amount of allowance attributed to:
Total gross loans held for investment		8,775	10,300
Allowance for loan and lease losses			0
MISN
Amount of allowance attributed to:
Total gross loans held for investment		172,600
Allowance for loan and lease losses	$ 0
MISN \| Non-PCI Loans
Amount of allowance attributed to:
Allowance for loan and lease losses		300	1,000
MISN \| PCI loans
Amount of allowance attributed to:
Allowance for loan and lease losses		100
Commercial
Allocation of the allowance to various segments in the loan portfolio
Balance, at the beginning of the period		5,125	4,781	6,115
Charge-offs		(190)	(758)	(1,281)
Recoveries		919	765	1,112
Provision for loan and lease losses		(482)	337	(1,165)
Balance, at the end of the period		5,372	5,125	4,781
Amount of allowance attributed to:
Allowance for loan and lease losses individually evaluated for impairment			195	151
Allowance for loan and lease losses collectively evaluated for impairment		5,144	4,974
Allowance for Loans acquired with deteriorated credit quality		33
Recorded investment in loan individually evaluated for impairment		5,363	4,633
Recorded investment in loan collectively evaluated for impairment		221,573	202,450
Recorded investment in loans acquired with deteriorated credit quality		2,235	2,819
Total gross loans held for investment		229,171	209,902
Commercial \| Non-PCI Loans
Amount of allowance attributed to:
Total gross loans held for investment		226,936	207,095
Commercial \| PCI loans
Amount of allowance attributed to:
Total gross loans held for investment		2,235	2,807
Construction and land
Allocation of the allowance to various segments in the loan portfolio
Balance, at the beginning of the period		2,000	3,660	4,641
Charge-offs		(34)	(29)	(203)
Recoveries		67	42	226
Provision for loan and lease losses		(1,410)	(1,673)	(1,004)
Balance, at the end of the period		623	2,000	3,660
Amount of allowance attributed to:
Allowance for loan and lease losses individually evaluated for impairment				1,472
Allowance for loan and lease losses collectively evaluated for impairment		618	528
Allowance for Loans acquired with deteriorated credit quality		5
Recorded investment in loan individually evaluated for impairment		5,138	6,346
Recorded investment in loan collectively evaluated for impairment		30,249	37,461
Recorded investment in loans acquired with deteriorated credit quality		282	853
Consumer
Allocation of the allowance to various segments in the loan portfolio
Balance, at the beginning of the period		202	131	102
Charge-offs		(7)	(8)	(411)
Recoveries		14	13	68
Provision for loan and lease losses		(36)	66	372
Balance, at the end of the period		173	202	131
Amount of allowance attributed to:
Allowance for loan and lease losses collectively evaluated for impairment		173	202
Recorded investment in loan individually evaluated for impairment		146	112
Recorded investment in loan collectively evaluated for impairment		5,887	7,866
Total gross loans held for investment		6,033	7,978
Consumer \| Non-PCI Loans
Amount of allowance attributed to:
Total gross loans held for investment		6,033	7,978
Unallocated
Allocation of the allowance to various segments in the loan portfolio
Balance, at the beginning of the period		346	262	113
Provision for loan and lease losses		(223)	84	149
Balance, at the end of the period		123	346	262
Amount of allowance attributed to:
Allowance for loan and lease losses collectively evaluated for impairment		123	346
Other real estate secured
Allocation of the allowance to various segments in the loan portfolio
Balance, at the beginning of the period		9,129	9,025	7,147
Charge-offs		(218)	(1,119)	(131)
Recoveries		99	37	361
Provision for loan and lease losses		2,151	1,186	1,648
Balance, at the end of the period		11,161	9,129	9,025
Amount of allowance attributed to:
Allowance for loan and lease losses individually evaluated for impairment			59	$ 148
Allowance for loan and lease losses collectively evaluated for impairment		11,061	8,981
Allowance for Loans acquired with deteriorated credit quality		41
Recorded investment in loan individually evaluated for impairment		5,656	5,299
Recorded investment in loan collectively evaluated for impairment		964,493	918,975
Recorded investment in loans acquired with deteriorated credit quality		$ 6,258	$ 6,669

The amount as of the balance sheet date which represents the recognized reserve for off-balance sheet commitments.

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Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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Amount of addition to allowance reserve for credit loss arising from purchase of loan and lease portfolios.

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

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The valuation allowance for financing receivables acquired with deteriorated credit quality.

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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 before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes 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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