Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 44,978	$ 64,613
Trade accounts receivable, net of allowance for doubtful accounts of $1,023 and $3,470, respectively	17,336	20,378
Other accounts receivable	3,778	7,471
Inventory	1,686	1,323
Prepaid expenses	6,171	4,319
Other current assets	1,183	5,416
Total current assets	75,132	103,520
Vessels, equipment, and other fixed assets at cost, net of accumulated depreciation of $21,360 and $4,392, respectively	345,003	363,845
Construction in progress	255	283
Deferred costs and other assets	7,068	4,307
Total assets	427,458	471,955
Current liabilities:
Accounts payable	7,469	12,770
Income and other taxes payable	1,733	1,540
Accrued personnel costs	5,298	5,040
Accrued interest expense	380	451
Accrued restructuring charges		7,458
Accrued professional fees	644	1,825
Other accrued liabilities	3,680	3,406
Total current liabilities	19,204	32,490
Long-term debt	93,155	92,365
Long-term income taxes:
Deferred income tax liabilities	2,381	2,992
Other income taxes payable	17,562	18,374
Other liabilities	1,090	1,244
Stockholders' equity:
Preferred stock, $0.01 par value; 5,000 shares authorized; no shares issued	0	0
Common stock, $0.01 par value; 25,000 shares authorized; 7,460 and 7,043 shares issued and 7,458 and 7,042 outstanding, respectively	75	70
Additional paid-in capital	318,521	317,932
Retained earnings (deficit)	(25,302)	3,511
Accumulated other comprehensive income	772	2,977
Treasury stock	(70)	(70)
Deferred compensation	70	70
Total stockholders' equity	294,066	324,490
Total liabilities and stockholders' equity	$ 427,458	$ 471,955