Consolidated Statements of Shareholders’ Equity - USD ($) $ in Thousands	Preferred Stock [Member]	Common Stock [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Subtotal Bank of Commerce Holdings [Member]	Total
Balance at Dec. 31, 2012	$ 19,931	$ 38,871	$ 50,261	$ 1,258	$ 110,321
Balance (in Shares) at Dec. 31, 2012		15,972,000
Net income			7,935		7,935	$ 7,935
Other comprehensive loss, net of tax				(3,650)	(3,650)
Comprehensive income					4,285	$ 4,285
Preferred stock dividend			(200)		(200)
Repurchase of common stock		$ (10,614)			(10,614)
Repurchase of common stock (in Shares)		(2,000,000)				(2,000,000)
Common cash dividend			(2,052)		(2,052)
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		$ 24			24
Compensation expense associated with restricted stock		6			6
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			5,727		5,727	$ 5,727
Other comprehensive loss, net of tax				2,305	2,305
Comprehensive income					8,032	$ 8,032
Preferred stock dividend			(200)		(200)
Repurchase of common stock		$ (4,562)			(4,562)
Repurchase of common stock (in Shares)		(700,000)				(700,000)
Common cash dividend			(1,604)		(1,604)
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
Stock options exercised		$ 23			23
Stock options exercised (in Shares)		3,000				5,700
Compensation expense associated with stock options		$ 54			54
Compensation expense associated with restricted stock		6			6
Balance at Dec. 31, 2014	19,931	$ 23,891	59,867	(87)	103,602
Balance (in Shares) at Dec. 31, 2014		13,294,000
Net income			8,586		8,586	$ 8,586
Other comprehensive loss, net of tax				(167)	(167)
Comprehensive income					8,419	$ 8,419
Preferred stock dividend			(189)		(189)
Common cash dividend			(1,600)		(1,600)
Common stock issued under employee plans and related tax benefit		$ 36			36
Common stock issued under employee plans and related tax benefit (in Shares)		9,000
Stock options exercised		$ 156			156
Stock options exercised (in Shares)		39,000				38,500
Compensation expense associated with stock options		$ 42			42
Compensation expense associated with restricted stock		89			89
Preferred stock redemption	(20,000)		(33)		(20,033)
Preferred stock accretion	$ 69		(69)			$ 69
Balance at Dec. 31, 2015		$ 24,214	$ 66,562	$ (254)	$ 90,522
Balance (in Shares) at Dec. 31, 2015		13,342,000