Annual report pursuant to section 13 and 15(d)

Medical Equipment - Summary of Medical Equipment (Detail)

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Medical Equipment - Summary of Medical Equipment (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Medical Equipment And Property [Abstract]    
Medical Equipment in rental service $ 37,252 $ 34,193
Medical Equipment in rental service - pump reserve (87) (270)
Accumulated depreciation (22,727) (20,852)
Medical equipment held for sale or rental 3,664 2,626
Total $ 18,102 $ 15,697