Business Segments (Tables)

6 Months Ended

Jun. 30, 2018

The following is a summary of operating results and certain other financial data for our business segments (in thousands):

	Three Months									Three Months
	Ended June 30, 2018									Ended June 30, 2017
					Inter-			Hub						Inter-			Hub
					Segment			Group						Segment			Group
	Hub		Mode		Elims			Total		Hub		Mode		Elims			Total
Revenue	$	888,238	$	314,078	$	(23,223	)	$	1,179,093	$	704,344	$	242,998	$	(23,746	)	$	923,596
Transportation costs		788,087		278,039		(23,223	)		1,042,903		631,787		214,238		(23,746	)		822,279
Gross margin		100,151		36,039		-			136,190		72,557		28,760		-			101,317

Costs and expenses:
Salaries and benefits		53,839		4,253		-			58,092		41,569		3,469		-			45,038
Agent fees and commissions		11		21,958		-			21,969		14		17,024		-			17,038
General and administrative		17,768		2,448		-			20,216		18,331		1,783		-			20,114
Depreciation and amortization		3,719		241		-			3,960		2,249		300		-			2,549
Total costs and expenses		75,337		28,900		-			104,237		62,163		22,576		-			84,739

Operating income	$	24,814	$	7,139	$	-		$	31,953	$	10,395	$	6,184	$	-		$	16,578

Capital Expenditures	$	46,337	$	745	$	-		$	47,082	$	22,937	$	31	$	-		$	22,968

	Six Months									Six Months
	Ended June 30, 2018									Ended June 30, 2017
					Inter-			Hub						Inter-			Hub
					Segment			Group						Segment			Group
	Hub		Mode		Elims			Total		Hub		Mode		Elims			Total
Revenue	$	1,719,823	$	601,977	$	(46,736	)	$	2,275,064	$	1,380,824	$	484,832	$	(49,304	)	$	1,816,352
Transportation costs		1,529,297		533,522		(46,736	)		2,016,083		1,236,462		426,292		(49,304	)		1,613,450
Gross margin		190,526		68,455		-			258,981		144,362		58,540		-			202,902

Costs and expenses:
Salaries and benefits		105,909		8,190		-			114,099		81,164		7,053		-			88,217
Agent fees and commissions		25		41,086		-			41,111		31		35,000		-			35,031
General and administrative		36,170		4,550		-			40,720		36,810		4,128		-			40,938
Depreciation and amortization		7,478		487		-			7,965		4,357		604		-			4,961
Total costs and expenses		149,582		54,313		-			203,895		122,362		46,785		-			169,147

Operating income	$	40,944	$	14,142	$	-		$	55,086	$	22,000	$	11,755	$	-		$	33,755

Capital Expenditures	$	67,874	$	1,387	$	-		$	69,261	$	29,562	$	31	$	-		$	29,593

The following tables summarize our revenue by segment and business line (in thousands) for the quarter ended June 30:

The following tables summarize our revenue by segment and business line (in thousands) for the six months ended June 30: