Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net income	$ 2,206	$ 2,006	$ 2,771	$ 4,046
Available-for-sale securities:
Unrealized gains (losses) arising during the period	1,895	(3,628)	4,725	(3,028)
Income tax (expense) benefit related to unrealized (gains) losses	(780)	1,493	(1,945)	1,246
Net change in unrealized gains (losses)	1,138	(2,374)	2,947	(2,132)
Held-to-maturity securities:
Accretion of held-to-maturity other comprehensive income to tax-exempt yield	(23)	(23)	(46)	(46)
Net change in other comprehensive income relating to held-to-maturity securities	(23)	(23)	(46)	(46)
Derivatives:
Unrealized (losses) gains arising during the period	(474)	1,254	(529)	1,342
Reclassification adjustments for net gains realized in earnings (net of tax expense of $711 and $62 for the three months ended June 30, 2014 and 2013 and net of tax expense of $775 and $124 for the six months ended June 30, 2014 and 2013 respectively)	(1,017)	(88)	(1,105)	(177)
Income tax benefit (expense) related to unrealized (losses) gains	195	(516)	218	(552)
Net unrealized change in derivatives	(1,296)	650	(1,416)	613
Other comprehensive (loss) income, net of tax	(181)	(1,747)	1,485	(1,565)
Comprehensive income – Bank of Commerce Holdings	2,025	259	4,256	2,481
Available for Sale Securities [Member]
Available-for-sale securities:
Reclassification adjustments for net gains (loss) realized in earnings (net of tax expense (benefit) of $16 and $(167) for the three months ended June 30, 2014 and 2013, respectively, and net of tax expense (benefit) of $117 and $(245) for the six months ended June 30, 2014 and 2013 respectively)	$ 23	$ (239)	$ 167	$ (350)