Retirement Benefit Plan
12 Months Ended
Dec. 31, 2016
Compensation and Retirement Disclosure [Abstract]  
Retirement Benefit Plan
20. Retirement Benefit Plan

Our 401(k) retirement plan provides for optional employee contributions for certain employees who are U.S. citizens up to the Internal Revenue Service limit and discretionary employer matching contributions. We make discretionary matching contributions to each participant’s account at a rate of (i) 100% of each participant’s first 1% of contributions plus (ii) 50% of each participant’s contributions up to the next 5% of eligible compensation. For the periods prior to the Spin-off, we were allocated costs incurred by Archrock for employer matching contributions. Costs incurred for employer matching contributions of $2.4 million, $3.6 million and $4.5 million during 2016, 2015 and 2014, respectively, are presented as selling, general and administrative expense in our statements of operations.