Consolidated Statements of Stockholders' Equity (USD $) In Thousands, except Share data	Preferred Stock [Member]	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Subtotal Bank of Commerce Holdings [Member]	Noncontrolling Interest [Member]	Total
Balance at Dec. 31, 2011	$ 19,931	$ 43,115	$ 45,671	$ 1,745	$ 110,462	$ 3,128	$ 113,590
Balance (in Shares) at Dec. 31, 2011		16,991,000
Net Income from continuing operations			7,560		7,560		7,560
Net income from discontinued operations			204		204		204
Less: income from noncontrolling interests of discontinued operations, net of tax			(348)		(348)	348
Other comprehensive income (loss)				(487)	(487)		(487)
Comprehensive income					6,929		7,277
Disposition of noncontrolling interest						(3,476)	(3,476)
Preferred stock dividend			(880)		(880)		(880)
Repurchase of common stock		(4,305)			(4,305)		(4,305)
Repurchase of common stock (in Shares)		(1,019,000)
Common cash dividend			(1,946)		(1,946)		(1,946)
Compensation expense associated with stock options		61			61		61
Balance at Dec. 31, 2012	19,931	38,871	50,261	1,258	110,321		110,321
Balance (in Shares) at Dec. 31, 2012		15,972,000
Net Income from continuing operations			7,935				7,935
Other comprehensive income (loss)				(3,650)			(3,650)
Comprehensive income							4,285
Preferred stock dividend			(200)				(200)
Repurchase of common stock		(10,614)					(10,614)
Repurchase of common stock (in Shares)		(2,000,000)
Common cash dividend			(2,052)				(2,052)
Stock options exercised (in Shares)							4,000
Restricted stock granted (in Shares)		1,000
Common stock issued under employee plans and related tax benefit		17					17
Common stock issued under employee plans and related tax benefit (in Shares)		4,000
Compensation expense associated with stock options		30					30
Balance at Dec. 31, 2013	19,931	28,304	55,944	(2,392)			101,787
Balance (in Shares) at Dec. 31, 2013		13,977,000
Net Income from continuing operations			5,727				5,727
Other comprehensive income (loss)				2,305			2,305
Comprehensive income							8,032
Preferred stock dividend			(200)				(200)
Repurchase of common stock		(4,562)					(4,562)
Repurchase of common stock (in Shares)		(700,000)
Common cash dividend			(1,604)				(1,604)
Stock options exercised		23					23
Stock options exercised (in Shares)		3,000					5,700
Common stock issued under employee plans and related tax benefit		66					66
Common stock issued under employee plans and related tax benefit (in Shares)		14,000
Compensation expense associated with stock options		60					60
Balance at Dec. 31, 2014	$ 19,931	$ 23,891	$ 59,867	$ (87)			$ 103,602
Balance (in Shares) at Dec. 31, 2014		13,294,000