Subsequent Events (Detail) - i4c Innovations - USD ($)		6 Months Ended
	Jul. 31, 2017	Jun. 30, 2017	Jun. 30, 2016
Subsequent Event [Line Items]
Percent of consolidated income (loss) attributable to disposal group		18.00%	123.00%
Subsequent Event
Subsequent Event [Line Items]
Proceeds from divestiture of businesses	$ 100
Revenue participation limit	$ 20,000,000