Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Operating revenues	$ 702,891	$ 590,214	$ 1,969,151	$ 1,751,876
Operating expenses:
Salaries, wages and benefits	234,250	197,151	649,198	598,129
Fuel	64,692	37,933	174,033	117,381
Supplies and maintenance	57,067	44,015	152,628	133,079
Taxes and licenses	24,419	24,032	71,396	70,835
Insurance and claims	27,702	23,307	70,497	85,160
Depreciation and amortization	68,615	62,980	196,431	199,487
Rent and purchased transportation	161,061	131,843	458,474	378,989
Communications and utilities	3,598	3,797	9,953	11,141
Other	(9,837)	3,053	(24,117)	11,688
Total operating expenses	631,567	528,111	1,758,493	1,605,889
Operating income	71,324	62,103	210,658	145,987
Other expense (income):
Interest expense	1,284	887	2,823	3,639
Interest income	(287)	(323)	(918)	(1,326)
Gain on investments in equity securities, net	(16,090)	0	(36,281)	0
Other	50	55	146	123
Total other expense (income)	(15,043)	619	(34,230)	2,436
Income before income taxes	86,367	61,484	244,888	143,551
Income taxes	21,278	15,152	61,275	35,029
Net income	65,089	46,332	183,613	108,522
Net income attributable to noncontrolling interest	(1,328)	0	(1,328)	0
Net income attributable to Werner	$ 63,761	$ 46,332	$ 182,285	$ 108,522
Earnings per share:
Basic	$ 0.94	$ 0.67	$ 2.69	$ 1.57
Diluted	$ 0.94	$ 0.67	$ 2.68	$ 1.56
Weighted-average common shares outstanding:
Basic	67,475	69,097	67,776	69,148
Diluted	67,834	69,449	68,136	69,500