Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Common stock repurchase	$ (6,919)	$ 0
OPERATING ACTIVITIES:
Net earnings from continuing operations	25,812	25,415
Net earnings from discontinued operations	642	734
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	91,147	78,428
Reclassification of pension and post-retirement balance	5,190	(2,376)
Deferred income taxes	15,988	14,998
Amortization of stock-based compensation	1,968	2,108
Amortization of DHL promissory note	(1,550)	(4,650)
Net gain on derivative instruments	(347)	(969)
Changes in assets and liabilities:
Accounts receivable	4,200	15,951
Inventory and prepaid supplies	1,089	(5,150)
Accounts payable	3,817	(5,144)
Unearned revenue	1,531	(1,683)
Accrued expenses, salaries, wages, benefits and other liabilities	(1,527)	3,294
Pension and post-retirement	(13,727)	(11,845)
Other	(213)	(1,630)
NET CASH PROVIDED BY OPERATING ACTIVITIES	134,020	107,481
INVESTING ACTIVITIES:
Capital expenditures	(110,973)	(90,866)
Proceeds from property and equipment	1,370	1,910
Investment in nonconsolidated affiliate	0	(15,000)
NET CASH (USED IN) INVESTING ACTIVITIES	(109,603)	(103,956)
FINANCING ACTIVITIES:
Principal payments on long term obligations	(53,197)	(53,234)
Proceeds from borrowings	20,000	45,000
Funding for hangar construction	0	6,452
NET CASH (USED IN) FINANCING ACTIVITIES	(40,116)	(1,782)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(15,699)	1,743
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	30,560	31,699
CASH AND CASH EQUIVALENTS AT END OF PERIOD	14,861	33,442
SUPPLEMENTAL CASH FLOW INFORMATION:
Interest paid, net of amount capitalized	8,219	10,266
Federal alternative minimum and state income taxes paid	871	565
SUPPLEMENTAL NON-CASH INFORMATION:
Debt extinguished	1,550	4,650
Accrued capital expenditures	$ 13,241	$ 461