Consolidated Statements of Stockholders' Equity (Unaudited) (USD $) In Thousands, except Share data	Total	Preferred Amount	Common Stock	Retained Earnings	Accumulated Other Comp-Income (Loss), net of tax	Subtotal Bank of Commerce Holdings	Non-controlling Interest Subsidiary
Balance at Dec. 31, 2011	$ 113,590	$ 19,931	$ 43,115	$ 45,671	$ 1,745	$ 110,462	$ 3,128
Balance, shares at Dec. 31, 2011			16,991
Net Income from continuing operations	7,560			7,560		7,560
Net Income from discontinued operations	204			204		204
Less: Income from non-controlling interests of discontinued operations, net of tax	0			(348)		(348)	348
Other comprehensive income, net of tax	(487)				(487)	(487)
Comprehensive income	7,277					6,929
Disposition of non-controlling interest	(3,476)						(3,476)
Preferred stock dividend	(880)			(880)		(880)
Repurchase of common stock	(4,305)		(4,305)			(4,305)
Repurchase of common shares			(1,019)
Common cash dividend ($0.12 and $0.06 per share in 2012 and 2013 respectively)	(1,946)			(1,946)		(1,946)
Compensation expense associated with stock options	61		61			61
Balance at Dec. 31, 2012	110,321	19,931	38,871	50,261	1,258	110,321	0
Balance, shares at Dec. 31, 2012			15,972
Net Income from continuing operations	4,046			4,046		4,046
Net Income from discontinued operations	0
Less: Income from non-controlling interests of discontinued operations, net of tax	0
Other comprehensive income, net of tax	(1,565)				(1,565)	(1,565)
Comprehensive income	2,481					2,481
Preferred stock dividend	(100)			(100)		(100)
Repurchase of common stock	(4,935)		(4,935)			(4,935)
Repurchase of common shares	(982,173)		(982)
Common cash dividend ($0.12 and $0.06 per share in 2012 and 2013 respectively)	(908)			(908)		(908)
Compensation expense associated with stock options	11		11			11
Balance at Jun. 30, 2013	$ 106,870	$ 19,931	$ 33,947	$ 53,299	$ (307)	$ 106,870	$ 0
Balance, shares at Jun. 30, 2013			14,990