CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2016	Mar. 31, 2015
Current assets:
Cash and cash equivalents	$ 678,438	$ 78,568
Trade and other receivables, less allowance for doubtful accounts of $11,450 in 2016 and $37,634 in 2015	228,113	303,096
Due from affiliate	338,595	420,365
Marine operating supplies	33,413	49,005
Other current assets	44,755	17,781
Total current assets	1,323,314	868,815
Investments in, at equity, and advances to unconsolidated companies	37,502	65,844
Properties and equipment:
Vessels and related equipment	4,666,749	4,717,132
Other properties and equipment	92,065	119,879
Properties and equipment, gross	4,758,814	4,837,011
Less accumulated depreciation and amortization	1,207,523	1,090,704
Net properties and equipment	3,551,291	3,746,307
Other assets	78,440	75,196
Total assets	4,990,547	4,756,162
Current liabilities:
Accounts payable	49,130	54,011
Accrued expenses	91,611	146,255
Due to affiliate	187,971	185,657
Accrued property and liability losses	3,321	3,669
Current portion of long-term debt	2,052,270	10,181
Other current liabilities	74,825	82,461
Total current liabilities	2,459,128	482,234
Long-term debt		1,524,295
Deferred income taxes	34,841	23,276
Accrued property and liability losses	9,478	10,534
Other liabilities and deferred credits	$ 181,546	$ 235,108
Commitments and Contingencies (Note 12)
Equity:
Common stock of $0.10 par value, 125,000,000 shares authorized, issued 47,067,715 shares at March 31, 2016 and 47,029,359 shares at March 31, 2015	$ 4,707	$ 4,703
Additional paid-in capital	166,604	159,940
Retained earnings	2,135,075	2,330,223
Accumulated other comprehensive loss	(6,866)	(20,378)
Total stockholders’ equity	2,299,520	2,474,488
Noncontrolling interests	6,034	6,227
Total equity	2,305,554	2,480,715
Total liabilities and equity	$ 4,990,547	$ 4,756,162