Quarterly report pursuant to Section 13 or 15(d)

Medical Equipment - Additional Information (Detail)

v3.7.0.1
Medical Equipment - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Property, Plant and Equipment [Abstract]    
Depreciation expense for medical equipment $ 1.6 $ 1.5