Commitments and Contingencies

12 Months Ended

Dec. 31, 2016

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingencies

(14) Commitments and Contingencies

Our principal commitments relate to long-term real estate leases and payment obligations to equipment vendors.

We are involved in certain claims and pending litigation arising from the ordinary conduct of business. We also provide accruals for claims within our self-insured retention amounts. Based on the knowledge of the facts, and in certain cases, opinions of outside counsel, in the Company’s opinion the resolution of these claims and pending litigation will not have a material effect on our financial position, results of operations or cash flows.

At December 31, 2016, approximately 31% of our employees in the United States, Canada and Colombia, and 94% of our employees in Mexico are subject to collective bargaining agreements that are renegotiated periodically, 18% of which are subject to contracts that expire in 2017.