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Commitments and Contingencies	3 Months Ended
Commitments and Contingencies	Mar. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	11. COMMITMENTS AND CONTINGENCIES In the ordinary course of conducting our business, we become involved in certain legal matters and investigations on a number of matters, including liability claims, taxes other than income taxes, contract disputes, employment, and other litigation matters. We accrue for anticipated costs to defend and resolve matters that are probable and estimable. We believe the outcomes of these matters will not have a material impact on our business or our financial statements. At March 31, 2017, our firm commitments to purchase transportation equipment totaled approximately $195,092.