Stock Incentive Plans	9 Months Ended
Stock Incentive Plans	Sep. 30, 2017
Stock Incentive Plans [Abstract]
Stock Incentive Plans	14. Stock Incentive Plans Our 2016 Long-Term Incentive Plan (“2016 Plan”) authorizes up to 10,000,000 shares of common stock to be issued at the discretion of the Compensation Committee of the Board of Directors. Our non-employee directors, officers and key employees are eligible to participate in the 2016 Plan. The 2016 Plan allows for the issuance of, among other things, stock options, stock appreciation rights, restricted stock, deferred stock units and dividend equivalent rights. Vesting periods for options, deferred stock units and restricted shares generally range from three to five years. Options expire ten years from the date of grant. Stock-based compensation expense totaled $6,790,000 and $16,459,000 for the three and nine months ended September 30, 2017, respectively, and $5,401,000 and $20,618,000 for the same periods in 2016.

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.