Commitments and Contingencies - Additional Information (Detail) $ in Millions	Dec. 31, 2016 USD ($)
Loss Contingencies [Line Items]
Contractual commitment due within the next year	$ 18.6
Contractual commitment due within two years	5.6
Contractual commitment due within three years	5.6
Software Subscription Agreement
Loss Contingencies [Line Items]
Contractual commitment due within the next year	1.3
Contractual commitment due within two years	1.4
Contractual commitment due within three years	1.2
Sponsorship Agreement With Professional Sports Franchise
Loss Contingencies [Line Items]
Contractual commitment due within the next year	2.7
Contractual commitment due within two years	0.7
Contractual commitment due within three years	$ 0.7