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Stock-based Compensation and Employee Benefit Plans | 3 Months Ended
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Mar. 31, 2017
Compensation and Retirement Disclosure [Abstract] |
Stock-based Compensation and Employee Benefit Plans | Stock-based Compensation and Employee Benefit Plans We provide stock-based compensation using stock options and RSUs. At the Annual Meeting, our stockholders approved the adoption of a new ESPP. The first offering period under the new ESPP commenced on January 1, 2017. The following reflects stock-based compensation expense recognized:
| Three Months Ended
March 31,
2017 |  | 2016
Related to vesting of stock options | $ | 0.2 |  |  | $ | 0.7 |
Related to vesting of RSUs | 5.7 |  |  | 5.8 |
Total | $ | 5.9 |  |  | $ | 6.5 |
We have defined benefit pension plans for our U.K.-based union employees (the "U.K. Plan") and certain Canadian-based employees (the "Canadian Plan") as well as a 401(k) plan for U.S.-based employees, which are described in Note 19 in our 2016 10-K. We recognized no material costs in 2017 and 2016 under these plans.

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- Definition The entire disclosure for an entity's employee compensation and benefit plans, including, but not limited to, postemployment and postretirement benefit plans, defined benefit pension plans, defined contribution plans, non-qualified and supplemental benefit plans, deferred compensation, share-based compensation, life insurance, severance, health care, unemployment and other benefit plans. + References No definition available. + Details
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