Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Interest income:
Interest and fees on loans	$ 29,918	$ 33,148	$ 35,084
Interest on tax-exempt securities	2,610	2,399	2,014
Interest on U.S. government securities	1,702	1,615	2,123
Interest on other securities	3,031	3,175	2,410
Total interest income	37,261	40,337	41,631
Interest expense:
Interest on demand deposits	485	610	787
Interest on savings deposits	254	394	792
Interest on certificates of deposit	2,625	3,697	4,912
Interest on securities sold under repurchase agreements	6	24	43
Interest on other borrowings	108	504	942
Total interest expense	3,478	5,229	7,476
Net interest income	33,783	35,108	34,155
Provision for loan losses	2,750	9,400	8,991
Net interest income after provision for loan losses	31,033	25,708	25,164
Noninterest income:
Service charges on deposit accounts	191	188	192
Payroll and benefit processing fees	484	538	458
Earnings on cash surrender value - Bank owned life insurance	534	470	465
Gain on investment securities, net	995	3,822	1,550
Merchant credit card service income, net	129	144	376
Other income	1,209	1,431	850
Total noninterest income	3,542	6,593	3,891
Noninterest expense:
Salaries and related benefits	12,035	11,030	9,957
Occupancy and equipment expense	2,205	2,058	2,009
Write down of other real estate owned	0	425	557
Federal Deposit Insurance Corporation insurance premium	725	820	1,319
Data processing fees	547	421	389
Professional service fees	1,241	1,078	1,016
Deferred compensation expense	179	594	533
Other expenses	5,309	5,206	4,147
Total noninterest expense	22,241	21,632	19,927
Income from continuing operations before provision for income taxes	12,334	10,669	9,128
Provision for income taxes	4,399	3,109	2,444
Net Income from continuing operations	7,935	7,560	6,684
Discontinued Operations:
Income from discontinued operations	0	535	1,512
Income tax expense associated with income from discontinued operations	0	331	392
Net income from discontinued operations	0	204	1,120
Less: Income from discontinued operations attributable to noncontrolling interest	0	348	549
Net (Loss) income from discontinued operations attributable to controlling interest	0	(144)	571
Net income attributable to Bank of Commerce Holdings	7,935	7,416	7,255
Less: Preferred dividends and accretion on preferred stock	200	880	943
Income available to common shareholders	$ 7,735	$ 6,536	$ 6,312
Basic earnings per share attributable to continuing operations	$ 0.52	$ 0.41	$ 0.34
Basic earnings per share attributable to discontinued operations	$ 0.00	$ (0.01)	$ 0.03
Average basic shares	14,940	16,344	16,991
Diluted earnings per share attributable to continuing operations	$ 0.52	$ 0.41	$ 0.34
Diluted earnings per share attributable to discontinued operations	$ 0.00	$ (0.01)	$ 0.03
Average diluted shares	14,964	16,344	16,991