CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
CURRENT ASSETS:
Cash and cash equivalents	$ 200,501	$ 94,681
Due from charterers, net	2,758	2,048
Due from Navig8 pools, net	26,253	60,750
Assets held for sale		30,195
Derivative financial instruments - current	70
Prepaid expenses and other current assets	23,884	27,611
Total current assets	253,466	215,285
NONCURRENT ASSETS:
Vessels, net of accumulated depreciation of $221,646 and $197,521, respectively	2,311,093	2,523,710
Vessels under construction		177,133
Other fixed assets, net	1,141	4,430
Deferred drydock costs, net	15,981	12,714
Working capital at Navig8 pools	26,100	33,100
Restricted cash	1,468	1,457
Derivative financial instruments - non-current	6,020	19,585
Other noncurrent assets	2,948	5,255
Total noncurrent assets	2,364,751	2,777,384
TOTAL ASSETS	2,618,217	2,992,669
CURRENT LIABILITIES:
Accounts payable and accrued expenses	29,817	33,991
Long-term debt, current portion	120,336	181,023
Derivative financial instruments - current	852	1,552
Total current liabilities	151,005	216,566
NONCURRENT LIABILITIES:
Long-term debt	1,241,490	1,400,928
Less unamortized discount and debt financing costs	(49,779)	(63,146)
Long-term debt less unamortized discount and debt financing costs	1,191,711	1,337,782
Other noncurrent liabilities	1,175	910
Total noncurrent liabilities	1,192,886	1,338,692
TOTAL LIABILITIES	1,343,891	1,555,258
COMMITMENTS AND CONTINGENCIES
SHAREHOLDERS' EQUITY:
Common stock, $0.01 par value per share; authorized 225,000,000 shares; issued and outstanding 83,267,426 shares at December 31, 2017 and 82,960,194 shares at December 31, 2016	833	830
Preferred stock, $0.01 par value per share; authorized 5,000,000 shares; issued and outstanding 0 shares at December 31, 2017 and December 31, 2016
Paid-in capital	1,519,564	1,515,362
Accumulated deficit	(264,656)	(96,115)
Accumulated other comprehensive income	18,585	17,334
Total shareholders' equity	1,274,326	1,437,411
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 2,618,217	$ 2,992,669