CONDENSED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 2,756	$ 5,634
Accounts receivable:
Trade - less allowance for doubtful accounts	303,723	297,177
Other	85,684	95,327
Inventories - net	173,932	185,402
Prepaid expenses and other current assets	43,493	49,411
Total current assets	609,588	632,951
Property and equipment	4,360,892	4,328,897
Less accumulated depreciation	(1,444,895)	(1,407,523)
Property and equipment - net	2,915,997	2,921,374
Goodwill	598,131	598,131
Other assets	133,576	137,439
Total assets	4,257,292	4,289,895
Current liabilities:
Income taxes payable	6,393	3,288
Accounts payable	144,477	134,571
Accrued liabilities	154,143	184,478
Deferred revenues	28,523	36,001
Total current liabilities	333,536	358,338
Long-term debt - less current portion	674,552	722,802
Deferred income taxes	722,963	705,453
Other long-term liabilities	92,568	90,435
Total long-term liabilities	1,490,083	1,518,690
Contingencies and commitments
Kirby stockholders' equity:
Common stock, $.10 par value per share. Authorized 120,000,000 shares, issued 59,776,000 shares	5,978	5,978
Additional paid-in capital	428,046	432,459
Accumulated other comprehensive income - net	(50,261)	(51,007)
Retained earnings	2,361,233	2,342,236
Treasury stock - at cost, 5,808,000 shares at March 31, 2017 and 5,921,000 at December 31, 2016	(314,826)	(320,348)
Total Kirby stockholders' equity	2,430,170	2,409,318
Noncontrolling interests	3,503	3,549
Total equity	2,433,673	2,412,867
Total liabilities and equity	$ 4,257,292	$ 4,289,895