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

Annual report pursuant to Section 13 and 15(d)

Debt - Additional Information (Detail)

Debt - Additional Information (Detail) (USD $)	0 Months Ended		12 Months Ended
Debt - Additional Information (Detail) (USD $)	Dec. 31, 2014	May 19, 2014	Dec. 31, 2014	Dec. 31, 2012	Nov. 30, 2012	Dec. 31, 2013
Line of Credit Facility [Line Items]
Credit facility, maturity date			Nov. 30, 2016
Decrease in effective floating and fixed interest rate		(1.50%)
Effective fixed interest rate	7.75%		7.75%
Interest on the credit facility, description			LIBOR plus 6.75% (with a LIBOR floor of 1.0%, for an effective fixed rate of 7.75%) or the Wells Fargo prime rate plus 4.75% (with a prime rate floor of 3.0%, for an effective floating rate of 8.0%).
Effective floating interest rate	8.00%
Effective interest rate on all outstanding borrowings			7.90%
Amendment to Credit Agreement, description			On January 23, 2015, the Company entered into the Third Amendment to the Credit Agreement with Wells Fargo and PennantPark. This amendment increases the maximum Leverage Covenant ratio for the period ending December 31, 2014 and all subsequent periods to 2.00:1.00. Prior this amendment, the maximum Leverage Covenant ratio for the periods ending (a) December 31, 2014 through March 31, 2015 was 1.50:1.00, (b) June 30, 2015 through September 30, 2015 was 1.25:1.00, (c) December 31, 2015 through September 30, 2016 was 1.00:1.00.
Weighted average interest rate under capital leases	7.60%us-gaap_DebtWeightedAverageInterestRate		7.60%us-gaap_DebtWeightedAverageInterestRate
LIBOR [Member]
Line of Credit Facility [Line Items]
Effective floating interest rate	6.75%
Debt instrument floor rate	1.00%
Prime Rate [Member]
Line of Credit Facility [Line Items]
Effective floating interest rate	4.75%
Debt instrument floor rate	3.00%
Maximum [Member]
Line of Credit Facility [Line Items]
Leverage Covenant ratio	2.00		2.00
Prior to amendment, maximum leverage covenant ratio for the period December 31, 2014 through March 31, 2015	1.50		1.50
Prior to amendment, maximum leverage covenant ratio for the period June 30, 2015 through September 30, 2015	1.25		1.25
Prior to amendment, maximum leverage covenant ratio for the period December 31, 2015 through September 30, 2016	1.00		1.00
Credit Facility [Member]
Line of Credit Facility [Line Items]
Minimum fixed charge coverage ratio	1.25		1.25
Fixed charge coverage ratio for the remainder period			1.50
Maximum leverage ratio			2.50
Leverage ratio for remainder period			1.75
Credit Facility subject to limitation on Capital Expenditures				$ 1,250,000
Credit Facility subject to limitation on Capital Expenditures in year one	5,500,000		5,500,000
Credit Facility subject to limitation on Capital Expenditures in year two	5,500,000		5,500,000
Credit Facility subject to limitation on Capital Expenditures in year three	5,500,000		5,500,000
Credit Facility subject to limitation on Capital Expenditures in year four	5,500,000		5,500,000
Credit Facility [Member] \| Minimum [Member]
Line of Credit Facility [Line Items]
Fixed charge coverage ratio for the remainder period			1.25
Leverage ratio for remainder period			1.00
Credit Facility [Member] \| Maximum [Member]
Line of Credit Facility [Line Items]
Fixed charge coverage ratio for the remainder period			2.00
Leverage ratio for remainder period			2.50
Term Loan A [Member]
Line of Credit Facility [Line Items]
Line of credit facility					12,000,000
Term Loan B [Member]
Line of Credit Facility [Line Items]
Line of credit facility					14,500,000
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of credit facility					10,000,000
Credit Facility subject to limitation on Capital Expenditures	7,432,000		7,432,000			$ 5,900,000