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Note 9 - Business Acquisition - Assets Acquired and Liabilities Assumed (Details) - USD ($) |  | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jan. 12, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Dec. 31, 2016
Net assets acquired: |  |  |  |
Goodwill |  |  | $ 15,435,000 | $ 4,559,000
Merger of Liberty Bank, N.A. into The Middlefield Banking Company [Member] |  |  |  |
Total purchase price | $ 42,168,000 |  |  |
Previously held equity interest in Liberty Bank | 1,068,000 | $ 1,068,000 |  |
Net assets acquired: |  |  |  |
Cash | 26,604,000 |  |  |
Loans and loans held for sale | 201,341,000 |  |  |
Premises and equipment, net | 325,000 |  |  |
Accrued interest receivable | 440,000 |  |  |
Bank-owned life insurance | 1,681,000 |  |  |
Core deposit intangible | 3,087,000 |  |  |
Deferred tax asset | (1,073,000) |  |  |
Other assets | 997,000 |  |  |
Time deposits | (30,744,000) |  |  |
Non-time deposits | (167,300,000) |  |  |
Accrued interest payable | (47,000) |  |  |
Other liabilities | (2,951,000) |  |  |
| 32,360,000 |  |  |
Goodwill | $ 10,876,000 |  |  |

X
- Definition Amount due from accrued interest receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged, acquired at the acquisition date. + References No definition available. + Details
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- Definition Amount of bank-owned life insurance acquired at the acquisition date. + References No definition available. + Details
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- Definition Amount of deferred tax asset, net of deferred tax liabilities, attributable to deductible temporary differences and carryforwards acquired at the acquisition date. + References No definition available. + Details
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- Definition Amount of accrued inters payables, assumed at the acquisition date. + References No definition available. + Details
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- Definition Amount of non-time deposits, assumed at the acquisition date. + References No definition available. + Details
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- Definition Amount of time deposits, assumed at the acquisition date. + References No definition available. + Details
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- Definition The amount of loans receivables recognized as of the acquisition date. + References No definition available. + Details
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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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- Definition The amount of identifiable intangible assets recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=84160947&loc=d3e2207-128464 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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- Definition Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=84160947&loc=d3e2207-128464 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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- Definition Amount of other liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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- Definition Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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- Definition The amount of property, plant, and equipment recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=84160947&loc=d3e2207-128464 + Details
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- Definition Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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- Definition Fair value at acquisition-date of the equity interest in the acquiree held by the acquirer, immediately before the acquisition date for businesses combined in stages. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g)(1) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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