Quarterly report pursuant to Section 13 or 15(d)

Medical Equipment and Property - Additional Information (Detail)

v3.2.0.727
Medical Equipment and Property - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Property, Plant and Equipment [Abstract]        
Depreciation expense for medical equipment $ 1.1 $ 0.8 $ 2.1 $ 1.5
Depreciation expense for property and equipment (other than medial equipment) recorded in general and administrative expenses $ 0.1 $ 0.1 $ 0.2 $ 0.2