Quarterly report pursuant to Section 13 or 15(d)

Loss Per Share - Additional Information (Detail)

v3.7.0.1
Loss Per Share - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Potentially dilutive shares included in the computation of basic and diluted earnings per share 26,669 80,001 26,669 80,001
Contingent Consideration Cash Payments $ 0.2 $ 4.3 $ 0.2 $ 4.3
Stock Options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Antidilutive number of options outstanding     24,928 27,828
Average exercise price $ 44.45 $ 43.34 $ 44.45 $ 43.34