CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 369,549	$ 371,791
Restricted cash	13,614	25,953
Trade and other receivables, net	121,155	111,266
Due from affiliates	121,959	132,951
Marine operating supplies	29,141	29,505
Other current assets	14,460	11,836
Total current assets	669,878	683,302
Investments in, at equity, and advances to unconsolidated companies	658	1,039
Properties and equipment, net	1,041,054	1,089,857
Deferred drydocking and survey costs	41,029	22,215
Other assets	39,651	31,326
Total assets	1,792,270	1,827,739
Current liabilities:
Accounts payable	24,170	31,939
Accrued costs and expenses	56,675	61,784
Due to affiliates	39,060	34,972
Current portion of long-term debt	10,002	8,568
Other current liabilities	24,442	21,092
Total current liabilities	154,349	158,355
Long-term debt	424,911	430,436
Other liabilities	97,471	94,025
Contingencies (Note 9)
Equity:
Common stock of $0.001 par value, 125,000,000 shares authorized, 37,845,158 and 36,978,280 shares issued and outstanding at June 30, 2019 and December 31, 2018, respectively	38	37
Additional paid-in capital	1,359,842	1,352,388
Accumulated deficit	(248,473)	(210,783)
Accumulated other comprehensive income	2,194	2,194
Total stockholders’ equity	1,113,601	1,143,836
Noncontrolling interests	1,938	1,087
Total equity	1,115,539	1,144,923
Total liabilities and equity	$ 1,792,270	$ 1,827,739