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Segments - Financial Information of Segments (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015
Segment Reporting, Asset Reconciling Item [Line Items] |  |
Interest income | $ 55,019 | $ 43,916
Interest expense | 5,382 | 3,657
NET INTEREST INCOME | 49,637 | 40,259
Provision for loan losses | 5,014 | 1,207
Noninterest income | 15,817 | 12,084
Noninterest expense | 36,758 | 32,243
Depreciation expense | 1,200 | 1,030
Amortization of intangible assets | 458 | 348
Provision for income taxes | 5,931 | 4,680
Net Income | 16,093 | 12,835
Operating Segments | Community Banking |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |
Interest income | 55,016 | 43,887
Interest expense | 5,438 | 3,889
NET INTEREST INCOME | 49,578 | 39,998
Provision for loan losses | 5,014 | 1,207
Noninterest income | 11,346 | 7,537
Noninterest expense | 33,169 | 28,687
Depreciation expense | 1,186 | 1,011
Amortization of intangible assets | 439 | 326
Provision for income taxes | 5,613 | 4,256
Net Income | 15,503 | 12,048
Operating Segments | Insurance |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |
Interest income | 1 |
NET INTEREST INCOME | 1 |
Noninterest income | 1,624 | 1,553
Noninterest expense | 1,254 | 1,137
Depreciation expense | 10 | 12
Amortization of intangible assets | 12 | 13
Provision for income taxes | 122 | 137
Net Income | 227 | 254
Operating Segments | Wealth Management |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |
Interest income | 128 | 140
NET INTEREST INCOME | 128 | 140
Noninterest income | 2,747 | 2,916
Noninterest expense | 2,305 | 2,220
Depreciation expense | 4 | 7
Amortization of intangible assets | 7 | 9
Provision for income taxes | 196 | 287
Net Income | 363 | 533
Eliminations |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |
Interest income | (126) | (111)
Interest expense | (56) | (232)
NET INTEREST INCOME | (70) | 121
Noninterest income | 100 | 78
Noninterest expense | $ 30 | $ 199

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32639-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Income Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6515339 + Details
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- Definition Represents the total of interest and dividend income, including any amortization and accretion (as applicable) of discounts and premiums, earned from (1) loans and leases whether held-for-sale or held-in-portfolio; (2) investment securities; (3) federal funds sold; (4) securities purchased under agreements to resell; (5) investments in banker's acceptances, commercial paper, or certificates of deposit; (6) dividend income; or (7) other investments not otherwise specified herein. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.1-5) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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