InfuSystem Holdings, Inc. Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Additional Information (Detail)

Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	1 Months Ended	3 Months Ended	12 Months Ended
	Oct. 31, 2014	Mar. 31, 2014	Dec. 31, 2014 Segment Financial_Institutions	Dec. 31, 2013
Summary Of Significant Accounting Policies [Line Items]
Number of reportable segments			1us-gaap_NumberOfOperatingSegments
Liquid Investments with original maturities period			Three months or less
Maintenance of cash and cash equivalents with number of financial institutions			2infu_NumberOfFinancialInstitution
Estimated obsolete inventory			$ 100,000us-gaap_InventoryValuationReserves	200,000us-gaap_InventoryValuationReserves
Medical equipment in rental services useful life			7 years
Medical equipment held for sale or rental reserves			100,000	100,000
Estimated useful lives		7 years	5 years
Impairment of intangible assets	0
Physician and Customer Relationships [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life Period			15 years
Non-Compete Agreements [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life Period			5 years
Software [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life Period			3 years
Computers Equipment and Software [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives			3 years
Software Development [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives			3 years
Stock Options [Member]
Summary Of Significant Accounting Policies [Line Items]
Shares with anti-dilutive effect			0.1	1.4
Sales Revenue, Gross [Member] \| Customer Concentration Risk [Member]
Summary Of Significant Accounting Policies [Line Items]
Number of payors having greater than 7% of the Company's revenue			0	0
Sales Revenue, Gross [Member] \| Customer Concentration Risk [Member] \| Medicare [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage			30.00%	31.00%
Sales Revenue, Gross [Member] \| Customer Concentration Risk [Member] \| Blue Cross/Blue Shield affiliates [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage			18.00%	17.00%
Property Plant And Equipment By Estimated Useful Life [Member]
Summary Of Significant Accounting Policies [Line Items]
Decrease in depreciation expense due to change in estimated useful lives			1,900,000
After tax impact to net income due to change in estimated useful life			$ 1,100,000
Impact to basic income per share due to change in estimated useful lives			$ 0.05
Impact to diluted income per share due to change in estimated useful lives			$ 0.05
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives			3 years
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives			7 years
Maximum [Member] \| Sales Revenue, Gross [Member] \| Customer Concentration Risk [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage			7.00%	7.00%
Greater Than [Member]
Summary Of Significant Accounting Policies [Line Items]
Likelihood of tax benefit being sustained			50.00%