CONDENSED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 22,521	$ 7,800
Accounts receivable:
Trade - less allowance for doubtful accounts	450,958	417,644
Other	99,568	104,239
Inventories - net	428,264	507,441
Prepaid expenses and other current assets	52,953	59,365
Total current assets	1,054,264	1,096,489
Property and equipment	5,304,058	5,011,824
Accumulated depreciation	(1,507,640)	(1,472,022)
Property and equipment - net	3,796,418	3,539,802
Operating lease right-of-use assets	158,917	0
Goodwill	953,826	953,826
Other intangibles - net	214,972	224,197
Other assets	54,493	57,280
Total assets	6,232,890	5,871,594
Current liabilities:
Bank notes payable	11	19
Income taxes payable	312	2,794
Accounts payable	212,147	278,057
Accrued liabilities	225,232	246,789
Current portion of operating lease liabilities	29,422	0
Deferred revenues	58,909	80,123
Total current liabilities	526,033	607,782
Long-term debt, net - less current portion	1,594,695	1,410,169
Deferred income taxes	570,954	542,785
Operating lease liabilities	136,970	0
Other long-term liabilities	82,066	94,557
Total long-term liabilities	2,384,685	2,047,511
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	829,460	823,347
Accumulated other comprehensive income - net	(26,967)	(33,511)
Retained earnings	2,815,175	2,723,592
Treasury stock - at cost, 5,570,000 shares at June 30, 2019 and 5,608,000 at December 31, 2018	(305,061)	(306,788)
Total Kirby stockholders' equity	3,319,154	3,213,187
Noncontrolling interests	3,018	3,114
Total equity	3,322,172	3,216,301
Total liabilities and equity	$ 6,232,890	$ 5,871,594