Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Common stock repurchase	$ (2,595)	$ 0
OPERATING ACTIVITIES:
Net earnings from continuing operations	19,465	15,820
Net loss from discontinued operations	428	422
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	60,393	52,121
Reclassification of pension and post-retirement balance	3,460	(1,585)
Deferred income taxes	11,940	9,047
Amortization of stock-based compensation	1,645	1,286
Amortization of DHL promissory note	(1,550)	(3,100)
Net gain on derivative instruments	(251)	(330)
Changes in assets and liabilities:
Accounts receivable	6,977	(4,619)
Inventory and prepaid supplies	1,082	(3,713)
Accounts payable	2,738	(976)
Unearned revenue	2,354	(2,334)
Accrued expenses, salaries, wages, benefits and other liabilities	(5,963)	96
Pension and post-retirement	(5,948)	(4,660)
Other	(184)	(2,041)
NET CASH PROVIDED BY OPERATING ACTIVITIES	96,586	55,434
INVESTING ACTIVITIES:
Capital expenditures	(76,308)	(23,508)
Proceeds from property and equipment	1,030	1,404
Investment in nonconsolidated affiliate	0	(15,000)
NET CASH (USED IN) INVESTING ACTIVITIES	(75,278)	(37,104)
FINANCING ACTIVITIES:
Principal payments on long term obligations	(47,091)	(44,285)
Proceeds from borrowings	20,000	15,000
Funding for hangar construction	0	3,019
NET CASH (USED IN) FINANCING ACTIVITIES	(29,686)	(26,266)
NET (DECREASE) IN CASH AND CASH EQUIVALENTS	(8,378)	(7,936)
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	30,560	31,699
CASH AND CASH EQUIVALENTS AT END OF PERIOD	22,182	23,763
SUPPLEMENTAL CASH FLOW INFORMATION:
Interest paid, net of amount capitalized	5,646	7,118
Federal alternative minimum and state income taxes paid	501	565
SUPPLEMENTAL NON-CASH INFORMATION:
Debt extinguished	1,550	3,100
Accrued capital expenditures	$ 3,618	$ 1,184