GOODWILL AND INTANGIBLE ASSETS (Details 2) (USD $)	3 Months Ended	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2012 Y	Dec. 31, 2011
Definite-lived intangible assets
Weighted Average Amortization Period (in years)		14
Cost	$ 36,900,000	$ 36,900,000
Accumulated Amortization	200,000	200,000
Net Value	36,700,000	36,700,000
Indefinite-lived intangible assets
Net Value	34,522,000	34,522,000
Total intangible assets
Cost	71,422,000	71,422,000
Net Value	71,222,000	71,222,000	2,822,000
Intangible amortization expense	200,000	200,000
Trade name
Indefinite-lived intangible assets
Net Value	31,700,000	31,700,000
Other
Indefinite-lived intangible assets
Net Value	2,822,000	2,822,000
Customer relationships
Definite-lived intangible assets
Weighted Average Amortization Period (in years)		15
Cost	33,600,000	33,600,000
Accumulated Amortization	130,000	130,000
Net Value	33,470,000	33,470,000
Driver network
Definite-lived intangible assets
Weighted Average Amortization Period (in years)		3
Cost	3,300,000	3,300,000
Accumulated Amortization	70,000	70,000
Net Value	3,230,000	3,230,000
Panther Expedited Services, Inc.
Total intangible assets
Amortization expense on intangible assets expected for fiscal 2012		2,500,000
Panther Expedited Services, Inc. | Minimum
Total intangible assets
Annual amortization expense on intangible assets expected for fiscal 2013-2017		3,000,000
Panther Expedited Services, Inc. | Maximum
Total intangible assets
Annual amortization expense on intangible assets expected for fiscal 2013-2017		$ 4,000,000