Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Current Assets:
Cash and cash equivalents	$ 552,840	$ 530,009
Restricted cash	1,742	0
Marketable securities	87,701	138,200
Receivables:
Trade, net of allowance for doubtful accounts of $2,728 and $2,483 in 2016 and 2015, respectively	125,987	159,076
Other Receivables	34,319	27,217
Inventories	16,798	24,768
Prepaid expenses and other	10,157	8,627
Total current assets	829,544	887,897
Property and Equipment:
Property, Plant and Equipment, Gross	2,158,826	2,123,201
Accumulated depreciation	997,214	994,181
Property, Plant and Equipment, Other, Net in Service	1,161,612	1,129,020
Construction in progress	402,090	454,605
Net property and equipment	1,563,702	1,583,625
Investments, at Equity, and Advances to 50% or Less Owned Companies	325,386	331,103
Construction Reserve Funds	166,888	255,408
Goodwill	52,394	52,340
Intangible Assets, Net	24,116	26,392
Other Assets	39,287	48,654
Total assets	3,001,317	3,185,419
Current Liabilities:
Current portion of long-term debt	24,409	35,531
Accounts payable and accrued expenses	55,971	71,952
Other current liabilities	98,706	92,677
Total current liabilities	179,086	200,160
Long-Term Debt	1,014,632	1,034,859
Exchange Option Liability on Subsidiary Convertible Senior Notes	8,171	5,611
Deferred Income Taxes	330,375	389,988
Deferred Gains and Other Liabilities	155,859	163,862
Total liabilities	1,688,123	1,794,480
SEACOR Holdings Inc. stockholders’ equity:
Preferred stock, $.01 par value, 10,000,000 shares authorized; none issued nor outstanding	0	0
Common stock, $.01 par value, 60,000,000 shares authorized; 37,873,330 and 37,684,829 shares issued in 2016 and 2015, respectively	379	377
Additional paid-in capital	1,510,623	1,505,942
Retained earnings	1,044,275	1,126,620
Shares held in Treasury of 20,551,856 and 20,529,929 in 2016 and 2015, respectively, at cost	1,357,876	1,356,499
Accumulated Other Comprehensive Loss, Net of Tax	(10,810)	(5,620)
Stockholders' equity attributable to parent, total	1,186,591	1,270,820
Noncontrolling interests in subsidiaries	126,603	120,119
Total equity	1,313,194	1,390,939
Liabilities and stockholders' equity, total	$ 3,001,317	$ 3,185,419