Consolidated Condensed Statements of Cash Flows (Unaudited) (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Net income (loss)	$ (809)	$ 713
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Provision for losses on accounts receivable	358	363
Depreciation and amortization	26,768	27,198
Amortization of deferred financing fees	197	476
Deferred income tax expense	378	13,992
Income tax benefit arising from restricted share vesting	(432)	0
Deferred gain (reversal into earnings) on fuel hedge	(623)	254
Stock based compensation expense	876	593
Equity in income of affiliate	(125)	0
Gain on disposition of property and equipment	(4,990)	(1,325)
Changes in operating assets and liabilities:
Receivables and advances	(4,424)	(7,810)
Prepaid expenses and other assets	1,912	(281)
Inventory and supplies	(143)	158
Insurance and claims accrual	(1,226)	1,770
Accounts payable and accrued expenses	(4,956)	2,186
Net cash flows provided by operating activities	12,761	38,287
Cash flows from investing activities:
Acquisition of property and equipment	(44,969)	(73,560)
Investment in affiliated company	(1,500)	0
Proceeds from disposition of property and equipment	32,829	23,391
Net cash flows used in investing activities	(13,640)	(50,169)
Cash flows from financing activities:
Change in checks outstanding in excess of bank balances	2,531	(1,033)
Proceeds from issuance of notes payable	23,657	50,095
Income tax benefit arising from restricted share vesting	432	0
Repayments of notes payable	(45,581)	(35,615)
Repayments of capital lease obligation	(728)	(560)
Proceeds (repayments) under revolving credit facility, net	14,036	(8,655)
Repurchase of company stock to satisfy minimum statutory withholding requirements	(540)	(131)
Debt refinancing costs	(8)	(136)
Net cash provided by (used in) financing activities	(6,201)	3,965
Net change in cash and cash equivalents	(7,080)	(7,917)
Cash and cash equivalents at beginning of period	9,361	12,221
Cash and cash equivalents at end of period	$ 2,281	$ 4,304