CONDENSED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 54,377	$ 80,338
Accounts receivable:
Trade - less allowance for doubtful accounts	389,579	315,283
Other	150,811	284,899
Inventories - net	308,820	309,675
Prepaid expenses and other current assets	75,004	57,776
Total current assets	978,591	1,047,971
Property and equipment	5,385,478	5,615,400
Accumulated depreciation	(1,680,231)	(1,698,330)
Property and equipment - net	3,705,247	3,917,070
Operating lease right-of-use assets	159,627	174,317
Goodwill	438,748	657,800
Other intangibles, net	62,233	68,979
Other assets	45,436	58,037
Total assets	5,389,882	5,924,174
Current liabilities:
Bank notes payable	1,983	40
Income taxes payable	499	474
Accounts payable	181,313	162,507
Accrued liabilities	228,375	224,855
Current portion of operating lease liabilities	32,813	32,750
Deferred revenues	67,214	45,406
Total current liabilities	512,197	466,032
Long-term debt, net - less current portion	1,206,193	1,468,546
Deferred income taxes	552,913	606,844
Operating lease liabilities - less current portion	152,615	163,496
Other long-term liabilities	119,740	131,703
Total long-term liabilities	2,031,461	2,370,589
Contingencies and commitments
Kirby stockholders' equity:
Common stock, $0.10 par value per share. Authorized 120,000,000 shares, issued 65,472,000 shares	6,547	6,547
Additional paid-in capital	851,587	844,979
Accumulated other comprehensive income - net	(54,663)	(61,452)
Retained earnings	2,335,478	2,593,393
Treasury stock - at cost, 5,361,000 shares at September 30, 2021 and 5,434,000 at December 31, 2020	(295,203)	(299,161)
Total Kirby stockholders' equity	2,843,746	3,084,306
Noncontrolling interests	2,478	3,247
Total equity	2,846,224	3,087,553
Total liabilities and equity	$ 5,389,882	$ 5,924,174