Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current Assets:
Cash and cash equivalents	$ 450,193	$ 385,235
Accounts receivable, net of allowances for doubtful accounts	489,749	612,785
Inventory	280,130	328,453
Other current assets	42,523	191,020
Total Current Assets	1,262,595	1,517,493
Property and Equipment, at cost	2,728,125	2,772,580
Less accumulated depreciation	1,574,867	1,505,849
Net Property and Equipment	1,153,258	1,266,731
Other Assets:
Goodwill	443,551	426,872
Other non-current assets	270,911	218,440
Total Other Assets	714,462	645,312
Total Assets	3,130,315	3,429,536
Current Liabilities:
Accounts payable	77,593	118,277
Accrued liabilities	430,771	497,679
Total Current Liabilities	508,364	615,956
Long-term Debt	793,058	795,836
Other Long-term Liabilities	312,250	439,010
Commitments and Contingencies
Stockholders' Equity:
Common Stock, par value $0.25	27,709	27,709
Additional paid-in capital	227,566	230,179
Treasury stock	(731,202)	(743,577)
Retained earnings	2,295,234	2,364,786
Accumulated other comprehensive income	(302,664)	(300,363)
Total Shareholders' Equity	1,516,643	1,578,734
Total Liabilities and Sharesholders' Equity	$ 3,130,315	$ 3,429,536