Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
ASSETS
Cash and due from banks	$ 28,616	$ 21,756
Interest bearing due from banks	20,379	23,312
Total cash and cash equivalents	48,995	45,068
Securities available-for-sale, at fair value	209,642	197,354
Securities held-to-maturity, at amortized cost	34,814	31,483
Portfolio loans	594,844	664,363
Allowance for loan and lease losses	(13,542)	(11,103)
Net loans	581,302	653,260
Bank premises and equipment, net	10,533	9,736
Goodwill and other intangibles	31	55
Other real estate owned	959	3,061
Other assets	45,541	39,407
TOTAL ASSETS	931,817	979,424
LIABILITIES AND STOCKHOLDERS' EQUITY
Demand - noninterest bearing	128,299	117,474
Demand - interest bearing	257,390	239,592
Savings accounts	92,043	89,364
Certificates of deposit	247,791	254,622
Total deposits	725,523	701,052
Securities sold under agreements to repurchase	0	13,095
Federal Home Loan Bank borrowings	75,000	125,000
Junior subordinated debentures	15,465	15,465
Other liabilities	13,061	14,491
Total Liabilities	829,049	869,103
COMMITMENTS AND CONTINGENCIES (NOTE 11)
Stockholders' Equity:
Common stock, no par value, 50,000,000 shares authorized; 16,991,495 issued; 14,462,337 outstanding as of September 30, 2013 and 15,972,005 outstanding on December 31, 2012	31,077	38,871
Retained earnings	54,327	50,261
Accumulated other comprehensive (loss) income, net of tax	(2,567)	1,258
Total Equity - Bank of Commerce Holdings	102,768	110,321
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	931,817	979,424
Series B Preferred stock [Member]
Stockholders' Equity:
Preferred stock, no par value, 2,000,000 shares authorized: Series B (liquidation preference $1,000 per share) issued and outstanding: 20,000 in 2013 and 20,000 in 2012	$ 19,931	$ 19,931