Quarterly report pursuant to Section 13 or 15(d)

Medical Equipment and Property - Summary of Medical Equipment (Detail)

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Medical Equipment and Property - Summary of Medical Equipment (Detail) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Medical Equipment And Property [Abstract]    
Medical equipment held for sale or rental $ 1,200 $ 1,642
Medical Equipment in rental service 58,681 59,034
Medical Equipment in rental service-pump reserve (519) (551)
Accumulated depreciation (33,861) (30,447)
Medical Equipment in rental service-net 24,301 28,036
Total $ 25,501 $ 29,678