• Filing Date: 2018-03-07
  • Form Type: 10-K
  • Description: Annual report
v3.8.0.1
Stock-Based Compensation - Assumptions Used to Estimate the Fair Value of Stock Options Granted (Detail)
12 Months Ended
Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Expected dividend yield 3.53%
Expected volatility 42.86%
Risk-free interest rate 1.92%
Expected life (in years) 5 years