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Note 2 - Basis of Presentation (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Operating Lease, Right-of-Use Asset | $ 3,776 |  | $ 3,776 |
Revenue, Remaining Performance Obligation, Amount | 0 |  | 0 |
Operating Lease, Liability, Total | 3,792 |  | 3,792 |
Contract with Customer, Liability, Total | 0 |  | 0 |
Grant [Member] |  |  |  |
Revenues, Total | 800 |  | 1,600 |
Service and Other Charges On Deposit Accounts, Mortgage Fees from Secondary Market Transactions at the Bank, ATM Fee Income and Other Non-Interest Income [Member] |  |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  | $ 800 |  | $ 1,600
Accounting Standards Update 2016-02 [Member] |  |  |  |
Operating Lease, Right-of-Use Asset | 3,800 |  | 3,800 |
Operating Lease, Liability, Total | $ 3,800 |  | $ 3,800 |

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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118944033&loc=SL49130531-203044 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130549-203045 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118944033&loc=SL49130532-203044 + Details
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