Transfers of Financial Assets - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Transfer of Financial Assets Accounted for as Sales [Line Items]
Maximum exposures to loss associated	$ 10,000,000	$ 5,200,000
Aggregate face value of receivables sold	208,700,000
Cash proceeds from receivables	208,500,000
Proceeds from customers	117,900,000
Repurchase of accounts receivables sold	11,200,000
Incremental operating cash inflows	50,000,000
Derecognized net receivables outstanding amount	100,200,000
Revolving Credit Facility [Member]
Transfer of Financial Assets Accounted for as Sales [Line Items]
Current maximum funding limit	$ 225,000,000