Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Condensed Consolidated Statements of Operations [Abstract]
Revenues	$ 208,271	$ 159,770	$ 379,429	$ 302,532
Operating expenses:
Purchased transportation costs	156,398	124,436	286,765	235,103
Personnel and related benefits	20,323	15,420	38,058	29,688
Other operating expenses	17,904	9,657	32,338	19,121
Depreciation and amortization	1,053	766	1,882	1,617
Acquisition transaction expenses	106		320	332
IPO related expenses		1,500		1,500
Total operating expenses	195,784	151,779	359,363	287,361
Operating income	12,487	7,991	20,066	15,171
Interest expense:
Interest on long-term debt	451	2,606	884	7,248
Dividends on preferred stock subject to mandatory redemption	50	50	100	100
Total interest expense	501	2,656	984	7,348
Loss on early extinguishment of debt		15,916		15,916
Income (loss) before provision (benefit) for income taxes	11,986	(10,581)	19,082	(8,093)
Provision (benefit) for income taxes	4,555	(4,454)	7,251	(3,423)
Net income (loss)	7,431	(6,127)	11,831	(4,670)
Accretion of Series B preferred stock		250		765
Net income (loss) available to common stockholders	$ 7,431	$ (6,377)	$ 11,831	$ (5,435)
Earnings (loss) per share available to common stockholders:
Basic	$ 0.25	$ (0.25)	$ 0.39	$ (0.25)
Diluted	$ 0.24	$ (0.25)	$ 0.38	$ (0.25)
Weighted average common stock outstanding:
Basic	30,285	25,497	30,227	21,906
Diluted	31,522	25,497	31,457	21,906