Marten Transport, Ltd. reported unaudited consolidated earnings results for the fourth quarter and year ended December 31, 2017. For the quarter, the company reported operating revenue of $182,771,000 against $172,661,000 a year ago. Operating income was $14,333,000 against $14,533,000 a year ago. Income before income taxes was $14,224,000 against $14,090,000 a year ago. Net income was $65,074,000 against $8,303,000 a year ago. Diluted earnings per share were $1.18 against $0.15 per share a year ago. Net cash provided by operating activities was $27,169,000 against $29,531,000 a year ago. For the year, the company reported operating revenue of $698,120,000 against $671,144,000 a year ago. Operating income was $56,862,000 against $58,303,000 a year ago. Income before income taxes was $56,473,000 against $57,066,000 a year ago. Net income was $90,284,000 against $33,464,000 a year ago. Diluted earnings per share were $1.65 against $0.61 per share a year ago. Net cash provided by operating activities was $121,879,000 against $133,801,000 a year ago.