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Note 17 - Revenue from Contracts with Customers - Summary of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
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Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Fees and service charges on deposit accounts |  |  |  |  |  |  |  |  |  | $ 27,985 |  | $ 25,649 |  | $ 25,486 |
Noninterest income, not in-scope(3) | [1] |  |  |  |  |  |  |  |  | 3,722 |  | 10,648 |  | 7,884 |
Total non-interest income |  | $ 10,795 | $ 7,835 | $ 7,767 | $ 5,310 | $ 10,466 | $ 12,961 | $ 6,152 | $ 6,718 | 31,707 | [2] | 36,297 | [2] | 33,370 | [2]
Fees and Services Charges on Deposit Account [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fees and service charges on deposit accounts | [2] |  |  |  |  |  |  |  |  | 8,387 |  | 9,173 |  | 9,082 |
Wealth Management Fees [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fees and service charges on deposit accounts | [2] |  |  |  |  |  |  |  |  | 5,905 |  | 3,065 |  | 3,590 |
Other Service Fees [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fees and service charges on deposit accounts | [2],[3] |  |  |  |  |  |  |  |  | $ 13,693 |  | $ 13,411 |  | $ 12,814 |
[1] | These amounts primarily represent revenue from contracts with customers that are out of the scope of ASC 606.
[2] | There were no adjustments to the Company's financial statements recorded as a result of the adoption of ASC 606. For comparability, the Company has adjusted prior period amounts to conform to the periods presentation.
[3] | Other service fees comprise of fees related to letters of credit, wire fees, fees on foreign exchange transactions and other immaterial individual revenue streams.

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- Definition Amount of noninterest income that are out of the scope of ASC 606. + References No definition available. + Details
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- Definition The total amount of noninterest income which may be derived from: (1) fees and commissions; (2) premiums earned; (3) insurance policy charges; (4) the sale or disposal of assets; and (5) other sources not otherwise specified. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13) -URI http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260 + Details
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- Definition Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130539-203045 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045 + Details
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