Annual report pursuant to Section 13 and 15(d)

Reportable Business Segments - Narrative (Details)

v3.7.0.1
Reportable Business Segments - Narrative (Details) - segment
12 Months Ended
Jan. 31, 2015
Dec. 31, 2016
Segment Reporting [Abstract]    
Number of reportable segments   2
Number of operating segments 1