Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current Assets:
Cash and cash equivalents	$ 399,644	$ 530,009
Restricted cash	3,711	0
Marketable securities	116,276	138,200
Receivables:
Trade, net of allowance for doubtful accounts of $5,201 and $2,483 in 2016 and 2015, respectively	162,880	159,076
Other	56,287	27,217
Inventories	16,773	24,768
Prepaid expenses and other	7,230	8,627
Total current assets	762,801	887,897
Property and Equipment:
Historical cost	2,194,023	2,123,201
Accumulated depreciation	1,008,867	994,181
Property, Plant and Equipment, Net In Service	1,185,156	1,129,020
Construction in progress	370,512	454,605
Net property and equipment	1,555,668	1,583,625
Investments, at Equity, and Advances to 50% or Less Owned Companies	313,772	331,103
Construction Reserve Funds	153,962	255,408
Goodwill	32,758	52,340
Intangible Assets, Net	20,078	26,392
Other Assets	23,282	48,654
Total Assets	2,862,321	3,185,419
Current Liabilities:
Current portion of long-term debt	183,602	35,531
Accounts payable and accrued expenses	90,702	71,952
Accrued wages and benefits	17,989	21,938
Accrued interest	5,503	5,774
Accrued income taxes	5,835	5,801
Short sales of marketable securities	1,274	4,827
Accrued capital, repair and maintenance expenditures	23,665	11,585
Deferred revenues	6,953	6,953
Other current liabilities	34,426	35,799
Total current liabilities	369,949	200,160
Long-Term Debt	848,771	1,034,859
Exchange Option Liability on Subsidiary Convertible Senior Notes	19,436	5,611
Deferred Income Taxes	288,601	389,988
Deferred Gains and Other Liabilities	139,296	163,862
Total liabilities	1,666,053	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; 37,939,032 and 37,684,829 shares issued in 2016 and 2015, respectively	379	377
Additional paid-in capital	1,518,635	1,505,942
Retained earnings	910,723	1,126,620
Shares held in treasury of 20,538,327 and 20,529,929 in 2016 and 2015, respectively, at cost	1,357,331	1,356,499
Accumulated other comprehensive loss, net of tax	(11,514)	(5,620)
Stockholders' equity attributable to SEACOR Holdings Inc.	1,060,892	1,270,820
Noncontrolling interests in subsidiaries	135,376	120,119
Total equity	1,196,268	1,390,939
Liabilities and stockholders' equity, total	$ 2,862,321	$ 3,185,419