Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net loss	$ (1,959)	$ (640)
Adjustments to reconcile net loss to net cash provided by operating activities:
Provision for losses on accounts receivable	13	103
Deferred gain on sales to equity method investee	84	312
Depreciation and amortization	11,621	12,326
Amortization of deferred financing fees	61	123
Deferred income tax (benefit) expense	(362)	78
Income tax deficit arising from restricted share vesting	(112)
Deferred gain on fuel hedges		436
Unrealized gain on ineffective portion of fuel hedges		(175)
Stock-based compensation expense	188	151
Equity in income of affiliate	(480)	(245)
Gain on disposition of property and equipment	(705)	(2,962)
Changes in operating assets and liabilities:
Receivables and advances	(1,150)	(1,704)
Prepaid expenses and other assets	1,802	85
Inventory and supplies	36	(29)
Insurance and claims accrual	(285)	2,534
Accounts payable and accrued expenses	(1,697)	1,170
Net cash flows provided by operating activities	7,055	11,563
Cash flows from investing activities:
Acquisition of property and equipment	(15,432)	(6,934)
Investment in affiliated company	(500)
Proceeds from disposition of property and equipment	11,690	21,304
Net cash flows (used in)/provided by investing activities	(4,242)	14,370
Cash flows from financing activities:
Change in checks outstanding in excess of bank balances	(842)	1,029
Proceeds from issuance of notes payable	15,900	250
Income tax deficit arising from restricted share vesting	112
Repayments of notes payable	(19,215)	(22,817)
Repayments of capital lease obligations	(510)	(477)
Proceeds/(repayments) under revolving credit facility, net	3,995	(3,973)
Payment of minimum tax withholdings on stock compensation	(200)
Debt refinancing costs	(350)	(26)
Net cash used in financing activities	(1,110)	(26,014)
Net change in cash and cash equivalents	1,703	(81)
Cash and cash equivalents at beginning of period	6,846	3,895
Cash and cash equivalents at end of period	$ 8,549	$ 3,814