Unaudited Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
OPERATING ACTIVITIES:
Net earnings from continuing operations	$ 6,662	$ 2,881
Net loss from discontinued operations	(230)	(117)
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	20,300	22,371
Pension and post-retirement	1,391	(581)
Deferred income taxes	3,905	1,348
Amortization of stock-based compensation	755	499
Amortization of DHL promissory note	(1,550)	(1,550)
Unrealized loss on derivative instruments	(460)	3,932
Write-off of unamortized debt issuance costs	0	2,870
Changes in assets and liabilities:
Accounts receivable	7,998	(47)
Inventory and prepaid supplies	567	(351)
Accounts payable	(3,768)	8,422
Unearned revenue	9,438	9,576
Accrued expenses, salaries, wages, benefits and other liabilities	(486)	(2,653)
Pension and post-retirement liabilities	(1,667)	(992)
Other	150	308
NET CASH PROVIDED BY OPERATING ACTIVITIES	43,005	45,916
INVESTING ACTIVITIES:
Capital expenditures	(46,759)	(44,494)
Proceeds from the disposal of property and equipment	1,785	0
NET CASH (USED IN) INVESTING ACTIVITIES	(44,974)	(44,494)
FINANCING ACTIVITIES:
Principal payments on long-term obligations	(1,851)	(9,313)
Proceeds from borrowings	25,000	0
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	23,149	(9,313)
NET (DECREASE) IN CASH AND CASH EQUIVALENTS	21,180	(7,891)
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	30,503	46,543
CASH AND CASH EQUIVALENTS AT END OF PERIOD	51,683	38,652
SUPPLEMENTAL CASH FLOW INFORMATION:
Interest paid, net of amount capitalized	2,803	3,242
Federal alternative minimum and state income taxes paid	201	2,322
SUPPLEMENTAL NON-CASH INFORMATION:
Debt extinguished	1,550	1,550
Accrued capital expenditures	$ 10,008	$ 6,157