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Commitments and Contingencies	9 Months Ended
Commitments and Contingencies	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 14—Commitments and Contingencies We are subject to various claims and legal proceedings with respect to matters such as governmental regulations and other actions arising out of the normal course of business. Management believes that the resolution of these matters will not have a material adverse effect on our financial position, results of operations, or cash flow. We had $40.1 million in standby letters of credit outstanding as of September 30, 2017 ($42.4 million—December 31, 2016).