Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2012	Jun. 30, 2012	Mar. 04, 2013 Voting common stock	Mar. 04, 2013 Non-voting common stock
Entity Information [Line Items]
Entity Registrant Name	INTERMOUNTAIN COMMUNITY BANCORP
Entity Central Index Key	0001284506
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Document Type	10-K
Document Period End Date	Dec. 31, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding			2,603,606	3,839,688
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float		$ 41,849,548