Note 1 - Summary of Significant Accounting Policies	6 Months Ended
Jun. 30, 2015
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]	NOTE 1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Bank of Commerce Holdings (the “Holding Company”), is a bank holding company (“BHC”) with its principal offices in Redding, California. The Holding Company’s principal business is to serve as a holding company for Redding Bank of Commerce (the “Bank” and together with the Holding Company, the “Company”) which operates under two separate names (Redding Bank of Commerce and Sacramento Bank of Commerce, a division of Redding Bank of Commerce). The Company has an unconsolidated subsidiary in Bank of Commerce Holdings Trust II. The balance sheet as of June 30, 2015 and December 31, 2014, which has been derived from the unaudited interim consolidated financial statements and audited consolidated financial statements, has been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and note disclosures normally included in annual consolidated financial statements prepared in accordance with generally accepted accounting principles have been condensed or omitted pursuant to those rules and regulations, although the Company believes that all adjustments (all of which are normal and recurring in nature) considered necessary for a fair presentation have been included and the disclosures made are adequate to make the information not misleading. The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States and with prevailing practices within the banking and securities industries. In preparing such consolidated financial statements, management is required to make certain estimates and judgments that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the balance sheet and the reported amounts of revenues and expenses for the reporting period. Actual results could differ significantly from those estimates. Material estimates that are particularly susceptible to significant change relate to the determination of the allowance for loan and lease losses (“ALLL”), the valuation of Other Real Estate Owned (“OREO”), and fair value measurements. Certain amounts for prior periods have been reclassified to conform to the current financial statement presentation. The results of reclassifications are not considered material and have no effect on previously reported net income. Subsequent to the issuance of the Company’s 2014 Annual Report on Form 10-K, the Company identified an error in the “pass” and “watch” classifications disclosed in the internal risk ratings table. Loans previously reported in the “watch” classification that are subject to enhanced monitoring but did not meet the regulatory definition of “watch” should have been reported in the “pass” classification. The revision reclassifies loans from the “watch” classification to the “pass” classification. There is no effect on the 2014 Consolidated Balance Sheets or 2014 Consolidated Statements of Operations. There is also no impact on the Company’s criticized or classified assets. See Note 6, Loans in the Notes to Consolidated Financial Statements for further discussion. The accompanying unaudited consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes contained in Bank of Commerce Holdings 2014 Annual Report on Form 10-K. The consolidated results of operations and cash flows for the 2015 interim periods shown in this report are not necessarily indicative of the results for any future interim period or the entire fiscal year. Principles of Consolidation The accompanying consolidated financial statements include the accounts of the Holding Company and its subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation. As of December 31, 2014, the Company had one wholly-owned trust (“Trust”) formed in 2005 to issue trust preferred securities and related common securities. The Company has not consolidated the accounts of the Trust in its Consolidated Financial Statements in accordance with Financial Accounting Standards Board Accounting Standards Codification (“FASB”) ASC 810, Consolidation (“ASC 810”). As a result, the junior subordinated debentures issued by the Company to the Trust are reflected on the Company’s Consolidated Balance Sheets.

Note 1 - Summary of Significant Accounting Policies

6 Months Ended

Jun. 30, 2015

Significant Accounting Policies [Text Block]

NOTE 1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Bank of Commerce Holdings (the “Holding Company”), is a bank holding company (“BHC”) with its principal offices in Redding, California. The Holding Company’s principal business is to serve as a holding company for Redding Bank of Commerce (the “Bank” and together with the Holding Company, the “Company”) which operates under two separate names (Redding Bank of Commerce and Sacramento Bank of Commerce, a division of Redding Bank of Commerce). The Company has an unconsolidated subsidiary in Bank of Commerce Holdings Trust II. The balance sheet as of June 30, 2015 and December 31, 2014, which has been derived from the unaudited interim consolidated financial statements and audited consolidated financial statements, has been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and note disclosures normally included in annual consolidated financial statements prepared in accordance with generally accepted accounting principles have been condensed or omitted pursuant to those rules and regulations, although the Company believes that all adjustments (all of which are normal and recurring in nature) considered necessary for a fair presentation have been included and the disclosures made are adequate to make the information not misleading.

The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States and with prevailing practices within the banking and securities industries. In preparing such consolidated financial statements, management is required to make certain estimates and judgments that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the balance sheet and the reported amounts of revenues and expenses for the reporting period. Actual results could differ significantly from those estimates. Material estimates that are particularly susceptible to significant change relate to the determination of the allowance for loan and lease losses (“ALLL”), the valuation of Other Real Estate Owned (“OREO”), and fair value measurements. Certain amounts for prior periods have been reclassified to conform to the current financial statement presentation. The results of reclassifications are not considered material and have no effect on previously reported net income. Subsequent to the issuance of the Company’s 2014 Annual Report on Form 10-K, the Company identified an error in the “pass” and “watch” classifications disclosed in the internal risk ratings table. Loans previously reported in the “watch” classification that are subject to enhanced monitoring but did not meet the regulatory definition of “watch” should have been reported in the “pass” classification. The revision reclassifies loans from the “watch” classification to the “pass” classification. There is no effect on the 2014 Consolidated Balance Sheets or 2014 Consolidated Statements of Operations. There is also no impact on the Company’s criticized or classified assets. See Note 6, Loans in the Notes to Consolidated Financial Statements for further discussion. The accompanying unaudited consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes contained in Bank of Commerce Holdings 2014 Annual Report on Form 10-K. The consolidated results of operations and cash flows for the 2015 interim periods shown in this report are not necessarily indicative of the results for any future interim period or the entire fiscal year.

Principles of Consolidation

The accompanying consolidated financial statements include the accounts of the Holding Company and its subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation. As of December 31, 2014, the Company had one wholly-owned trust (“Trust”) formed in 2005 to issue trust preferred securities and related common securities. The Company has not consolidated the accounts of the Trust in its Consolidated Financial Statements in accordance with Financial Accounting Standards Board Accounting Standards Codification (“FASB”) ASC 810, Consolidation (“ASC 810”). As a result, the junior subordinated debentures issued by the Company to the Trust are reflected on the Company’s Consolidated Balance Sheets.