Retirement Plans	12 Months Ended
Dec. 31, 2019
Retirement Plans
Retirement Plans	Note 16 — Retirement Plans The Company maintains a defined contribution plan for the benefit of its U.S. employees. The plan is intended to be tax qualified and contains a qualified cash or deferred arrangement as described under Section 401(k) of the Internal Revenue Code. Eligible participants may elect to contribute a percentage of their base compensation, and the Company may make matching contributions, generally equal to fifty cents for every dollar employees contribute, up to the lesser of three percent of the employee’s eligible compensation or three percent of the maximum the employee is permitted to contribute under then current Internal Revenue Code limitations. Generally, the plan calls for vesting in the Company contributions over the initial five years of a participant’s employment. In addition, the Company assumed Ultratech’s 401(k) plan as a result of the merger, and Ultratech’s plan was merged into the Company’s existing plan effective January 1, 2018. The Company provided employer contributions associated with these plans of approximately $2.4 million, $2.0 million, and $1.8 million for the years ended December 31, 2019, 2018, and 2017, respectively.

Retirement Plans

12 Months Ended

Dec. 31, 2019

Note 16 — Retirement Plans

The Company maintains a defined contribution plan for the benefit of its U.S. employees. The plan is intended to be tax qualified and contains a qualified cash or deferred arrangement as described under Section 401(k) of the Internal Revenue Code. Eligible participants may elect to contribute a percentage of their base compensation, and the Company may make matching contributions, generally equal to fifty cents for every dollar employees contribute, up to the lesser of three percent of the employee’s eligible compensation or three percent of the maximum the employee is permitted to contribute under then current Internal Revenue Code limitations. Generally, the plan calls for vesting in the Company contributions over the initial five years of a participant’s employment. In addition, the Company assumed Ultratech’s 401(k) plan as a result of the merger, and Ultratech’s plan was merged into the Company’s existing plan effective January 1, 2018. The Company provided employer contributions associated with these plans of approximately $2.4 million, $2.0 million, and $1.8 million for the years ended December 31, 2019, 2018, and 2017, respectively.