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Loans and Allowance for Loan Losses - Credit Quality of Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 1,451,228	$ 1,363,351
Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,392,597	1,293,968
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	36,300	33,146
Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	22,331	36,237
Commercial loans | Commercial
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	219,277	209,899
Total loans	219,452	210,223
Commercial loans | Pass | Commercial
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	192,560	197,659
Commercial loans | Special Mention | Commercial
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	22,457	6,776
Commercial loans | Substandard | Commercial
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	4,260	5,464
Commercial real estate loans | Commercial real estate, owner-occupied
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	240,598	227,989
Total loans	242,309	230,605
Commercial real estate loans | Commercial real estate, investor
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	714,153	671,325
Total loans	715,879	673,499
Commercial real estate loans | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	65,494	48,402
Total loans	65,495	48,413
Commercial real estate loans | Pass | Commercial real estate, owner-occupied
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	219,060	205,820
Commercial real estate loans | Pass | Commercial real estate, investor
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	710,042	651,548
Commercial real estate loans | Pass | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	62,255	41,710
Commercial real estate loans | Special Mention | Commercial real estate, owner-occupied
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	12,371	10,406
Commercial real estate loans | Special Mention | Commercial real estate, investor
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	372	13,304
Commercial real estate loans | Special Mention | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	0	1,008
Commercial real estate loans | Substandard | Commercial real estate, owner-occupied
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	9,167	11,763
Commercial real estate loans | Substandard | Commercial real estate, investor
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	3,739	6,473
Commercial real estate loans | Substandard | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	3,239	5,684
Residential loans | Home equity
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	112,232	110,721
Total loans	112,300	110,788
Residential loans | Other residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	73,154	73,035
Residential loans | Pass | Home equity
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	109,959	107,933
Residential loans | Pass | Other residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	73,154	70,987
Residential loans | Special Mention | Home equity
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	1,100	322
Residential loans | Special Mention | Other residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Residential loans | Substandard | Home equity
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	1,173	2,466
Residential loans | Substandard | Other residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	2,048
Consumer loans | Installment and other consumer
Financing Receivable, Recorded Investment [Line Items]
Total loans	22,639	16,788
Consumer loans | Pass | Installment and other consumer
Financing Receivable, Recorded Investment [Line Items]
Total loans	22,307	16,101
Consumer loans | Special Mention | Installment and other consumer
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	190
Consumer loans | Substandard | Installment and other consumer
Financing Receivable, Recorded Investment [Line Items]
Total loans	332	497
Receivables Acquired with Deteriorated Credit Quality
Financing Receivable, Recorded Investment [Line Items]
Purchased credit-impaired	3,681	5,192
Receivables Acquired with Deteriorated Credit Quality | Pass
Financing Receivable, Recorded Investment [Line Items]
Purchased credit-impaired	3,260	2,210
Receivables Acquired with Deteriorated Credit Quality | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Purchased credit-impaired	0	1,140
Receivables Acquired with Deteriorated Credit Quality | Substandard
Financing Receivable, Recorded Investment [Line Items]
Purchased credit-impaired	421	1,842
Receivables Acquired with Deteriorated Credit Quality | Commercial loans | Commercial
Financing Receivable, Recorded Investment [Line Items]
Purchased credit-impaired	175	324
Receivables Acquired with Deteriorated Credit Quality | Commercial real estate loans | Commercial real estate, owner-occupied
Financing Receivable, Recorded Investment [Line Items]
Purchased credit-impaired	1,711	2,616
Receivables Acquired with Deteriorated Credit Quality | Commercial real estate loans | Commercial real estate, investor
Financing Receivable, Recorded Investment [Line Items]
Purchased credit-impaired	1,726	2,174
Receivables Acquired with Deteriorated Credit Quality | Commercial real estate loans | Construction
Financing Receivable, Recorded Investment [Line Items]
Purchased credit-impaired	1	11
Receivables Acquired with Deteriorated Credit Quality | Residential loans | Home equity
Financing Receivable, Recorded Investment [Line Items]
Purchased credit-impaired	68	67
Receivables Acquired with Deteriorated Credit Quality | Residential loans | Other residential
Financing Receivable, Recorded Investment [Line Items]
Purchased credit-impaired	0	0
Receivables Acquired with Deteriorated Credit Quality | Consumer loans | Installment and other consumer
Financing Receivable, Recorded Investment [Line Items]
Purchased credit-impaired	$ 0	$ 0

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Loans and Leases Receivable, Net of Deferred Income, Excluding Purchased Credit-impaired Loans

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
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-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522

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-Name Accounting Standards Codification
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