Profit Sharing and 401(K) Plan (Notes)

12 Months Ended

Dec. 31, 2016

Profit Sharing and 401 (k) Plan [Abstract]

Pension and Other Postretirement Benefits Disclosure [Text Block]

Profit Sharing and 401(k) Plan

Under our profit sharing and 401(k) plan, eligible employees may defer up to 50% of their compensation on a pre-tax basis, subject to Internal Revenue Service limitations. Each year, we may make a discretionary contribution equal to a percentage of the employee’s contribution. During 2016, 2015 and 2014, our contributions, net of forfeitures, were $4.6 million, $4.2 million and $3.7 million, respectively.