Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Goodwill And Other Intangible Assets [Line Items]
Goodwill impairment	$ 0	$ 0	$ 0
Discrete forecast period	5 years
Intangible assets, net	$ 3,642,000	4,235,000
Finite-lived intangible assets, net	1,400,000	2,000,000
Amortization of intangible assets	27,200,000	26,600,000
Impairment expense	0	0	$ 0
Trademarks and Trade Names
Goodwill And Other Intangible Assets [Line Items]
Intangible assets, net	$ 2,200,000	$ 2,200,000