CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net earnings (loss)	$ 122,761	$ (246,771)	$ (271,592)
Adjustments to reconcile net earnings (loss) to net cash provided by operations:
Depreciation and amortization	201,443	213,718	219,921
Provision (credit) for doubtful accounts	1,183	(138)	3,716
Provision (benefit) for deferred income taxes	37,782	(44,419)	25,163
Gain on disposition of assets	(8,279)	(5,761)	(118)
Impairments and other charges	0	340,713	561,274
Amortization of share-based compensation	13,865	15,713	14,722
Amortization of major maintenance costs	29,031	33,213	30,214
Other	(283)	(640)	(90)
Increase (decrease) in cash flows resulting from changes in:
Accounts receivable	(31,550)	29,126	(124,941)
Inventory	(127,095)	(19,248)	47,076
Other assets	(27,801)	(38,335)	(29,994)
Income taxes payable	1,975	480	8,826
Accounts payable	75,996	15,951	(39,795)
Accrued and other liabilities	5,100	27,974	558
Net cash provided by operating activities	294,128	321,576	444,940
Cash flows from investing activities:
Capital expenditures	(172,606)	(98,015)	(148,185)
Acquisitions of businesses and marine equipment, net of cash acquired	(3,900)	(9,115)	(354,972)
Proceeds from disposition of assets and other	36,905	51,342	17,310
Net cash used in investing activities	(139,601)	(55,788)	(485,847)
Cash flows from financing activities:
Borrowings (payments) on bank credit facilities, net	1,358	(248,105)	250,024
Borrowings on long-term debt	310,000	0	0
Payments on long-term debt	(395,000)	(60,000)	(150,000)
Payment of debt issue costs	(1,977)	0	0
Proceeds from exercise of stock options	3,887	629	353
Payments related to tax withholding for share-based compensation	(3,408)	(2,856)	(3,193)
Treasury stock purchases	(22,901)	0	0
Return of investment to noncontrolling interests and other	(722)	(981)	(676)
Net cash provided by (used in) financing activities	(108,763)	(311,313)	96,508
Increase (decrease) in cash and cash equivalents	45,764	(45,525)	55,601
Cash and cash equivalents, beginning of year	34,813	80,338	24,737
Cash and cash equivalents, end of year	80,577	34,813	80,338
Cash paid (received) during the period:
Interest paid	42,816	40,878	48,721
Income taxes paid (refunded), net	2,553	(116,648)	(35,571)
Operating cash outflow from operating leases	44,229	44,089	43,639
Non-cash investing activity:
Capital expenditures included in accounts payable	2,996	18,633	(13,280)
Right-of-use assets obtained in exchange for lease obligations	$ 22,799	$ 33,842	$ 46,511