Condensed Consolidated Statements of Stockholders' Equity (Unaudited) (USD $) In Thousands, except Share data	Total	Preferred Amount	Warrant	Common Shares	Retained Earnings	Accumulated Other Comp- Income (Loss), net of tax	Subtotal Bank of Commerce Holdings	Noncontrolling Interest in Subsidiary
Balance at Dec. 31, 2009	$ 68,807	$ 16,641	$ 449	$ 9,730	$ 39,004	$ 658	$ 66,482	$ 2,325
Balance, shares at Dec. 31, 2009				8,711
Net Income	6,474				6,220		6,220	254
Other comprehensive income, net of tax	(1,167)					(1,167)	(1,167)
Comprehensive income	5,307						5,053
Accretion on preferred stock		90			(90)
Common cash dividend ($0.18 per share and 0.03 per share for twelve months ended 31 dec, 2010 and six months ended 30 June, 2011 respectively)	(2,562)				(2,562)		(2,562)
Preferred stock dividend	(850)				(850)		(850)
Compensation expense associated with stock options	54			54			54
Issuance of new shares, net of issuance costs ($4.25 per share)	32,971			32,971			32,971
Issuance of new shares, net of issuance costs ($4.25 per share), shares				8,280
Balance at Dec. 31, 2010	103,727	16,731	449	42,755	41,722	(509)	101,148	2,579
Balance, shares at Dec. 31, 2010				16,991
Net Income	3,132				3,150		3,150	(18)
Other comprehensive income, net of tax	2,761					2,761	2,761
Comprehensive income	5,893						5,911
Accretion on preferred stock		45			(45)
Common cash dividend ($0.18 per share and 0.03 per share for twelve months ended 31 dec, 2010 and six months ended 30 June, 2011 respectively)	(1,019)				(1,019)		(1,019)
Preferred stock dividend	(425)				(425)		(425)
Compensation expense associated with stock options	18			18			18
Balance at Jun. 30, 2011	$ 108,194	$ 16,776	$ 449	$ 42,773	$ 43,383	$ 2,252	$ 105,633	$ 2,561
Balance, shares at Jun. 30, 2011				16,991