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

Annual report pursuant to Section 13 and 15(d)

Note 2 - Summary of Significant Accounting Policies (Details Textual)

Note 2 - Summary of Significant Accounting Policies (Details Textual) $ in Thousands	1 Months Ended	12 Months Ended
	Oct. 31, 2017 USD ($)	Dec. 31, 2017 USD ($) shares	Dec. 31, 2016 USD ($) shares	Jan. 01, 2017 USD ($)	Dec. 31, 2015 USD ($)
Number of Operating Segments		1
Number of Financial Institutions		2
Inventory Valuation Reserves		$ 100	$ 200
Medical Equipment in Rental Services, Useful Life		7 years
Medical Equipment Held for Sale or Rental Reserves		$ 500	600
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	$ 0
Capitalized Computer Software, Net		200	3,500
Capitalized Computer Software, Amortization		3,100	1,700
Impairment of Long-Lived Assets Held-for-use		$ 1,000	$ 0
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount \| shares		490,428	90,715
Retained Earnings (Accumulated Deficit)		$ (61,633)	$ (41,142)
Deferred Tax Assets, Valuation Allowance		11,435
Reclassification From Current Deferred Tax Assets to Noncurrent Deferred Tax Assets [Member]
Current Period Reclassification Adjustment		$ 2,700
Accounting Standards Update 2016-09 [Member]
Deferred Tax Assets, Gross				$ 200
Retained Earnings (Accumulated Deficit)				$ 200
Employee Stock Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount \| shares		500,000	100,000
Sales Revenue, Product Line [Member] \| Customer Concentration Risk [Member] \| National Association 1 [Member] \| Oncology Business [Member]
Concentration Risk, Percentage		24.00%
Sales Revenue, Product Line [Member] \| Customer Concentration Risk [Member] \| National Association 2 [Member] \| Oncology Business [Member]
Concentration Risk, Percentage		6.00%
Sales Revenue, Product Line [Member] \| Customer Concentration Risk [Member] \| Medicare [Member] \| Oncology Business [Member]
Concentration Risk, Percentage			21.00%
Sales Revenue, Product Line [Member] \| Customer Concentration Risk [Member] \| National Association [Member] \| Oncology Business [Member]
Concentration Risk, Percentage			19.00%
Sales Revenue, Net [Member] \| Customer Concentration Risk [Member] \| National Association 1 [Member]
Concentration Risk, Percentage		13.00%
Sales Revenue, Net [Member] \| Customer Concentration Risk [Member] \| National Association 2 [Member]
Concentration Risk, Percentage		6.00%
Sales Revenue, Net [Member] \| Customer Concentration Risk [Member] \| Medicare [Member]
Concentration Risk, Percentage			13.00%
Sales Revenue, Net [Member] \| Customer Concentration Risk [Member] \| Blue Cross/Blue Shield Affiliates [Member]
Concentration Risk, Percentage			13.00%
Capital Leases [Member]
Debt, Weighted Average Interest Rate		3.60%
Computer Software, Intangible Asset [Member]
Finite-Lived Intangible Asset, Useful Life		3 years
Information Technology Software [Member]
Property, Plant and Equipment, Useful Life		3 years
Computer Equipment [Member]
Property, Plant and Equipment, Useful Life		5 years
Minimum [Member]
Property, Plant and Equipment, Useful Life		3 years
Minimum [Member] \| Physician and Customer Relationships [Member]
Finite-Lived Intangible Asset, Useful Life		15 years
Minimum [Member] \| Noncompete Agreements [Member]
Finite-Lived Intangible Asset, Useful Life		2 years
Minimum [Member] \| Software Development [Member]
Property, Plant and Equipment, Useful Life		3 years
Maximum [Member]
Property, Plant and Equipment, Useful Life		7 years
Maximum [Member] \| Physician and Customer Relationships [Member]
Finite-Lived Intangible Asset, Useful Life		20 years
Maximum [Member] \| Noncompete Agreements [Member]
Finite-Lived Intangible Asset, Useful Life		5 years
Maximum [Member] \| Software Development [Member]
Property, Plant and Equipment, Useful Life		5 years