Revenue Recognition - Schedule of Prepaid Customer Rebates Future Amortization (Detail)	Jun. 30, 2018 USD ($)
Revenue From Contract With Customer [Abstract]
2018	$ 20,756
2019	11,628
2020	7,638
2021	5,286
2022	3,344
Thereafter	5,143
Total prepaid customer rebates	$ 53,795