Summary of Significant Accounting Policies - Self-Insurance (Detail) |
6 Months Ended |
---|---|
Jun. 30, 2017
USD ($)
| |
Accounting Policies [Abstract] | |
Employer's liability claims subject to deductible per occurrence | $ 1,000,000 |
Worker's compensation claims per occurrence | 5,000,000 |
Auto liability insurance claims deductible | 10,000,000 |
General liability insurance claims deductible | 10,000,000 |
Employee health care benefit plans subject to deductible per claimant | $ 400,000 |