Annual report pursuant to Section 13 and 15(d)

SUMMARY QUARTERLY CONSOLIDATED FINANCIAL INFORMATION (UNAUDITED) (Details)

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SUMMARY QUARTERLY CONSOLIDATED FINANCIAL INFORMATION (UNAUDITED) (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]                      
Total revenues $ 71,815 $ 74,682 $ 71,615 $ 53,952 $ 69,286 $ 87,419 $ 91,004 $ 66,660 $ 272,064 $ 314,369 $ 292,594
Total operating costs 91,936 92,010 83,171 72,231 79,262 94,619 87,976 78,946 339,348 340,803 337,505
Operating loss (income) (20,121) (17,328) (11,556) (18,279) (9,976) (7,200) 3,028 (12,286) (67,284) (26,434) (44,911)
Total other income (expenses) 5,324 5,471 (1,403) 3,679 6,750 (6,875) (7,831) (4,009) 13,071 (11,965) 3,675
Income tax expense 479 162 0 0 284 0 0 0 641 284 965
(Loss) Income from continuing operations (15,276) (12,019) (12,959) (14,600) (3,510) (14,075) (4,803) (16,295) (54,854) (38,683)  
Preferred dividends (1,395) (1,395) (1,395) (1,395) (1,395) (1,395) (1,395) (1,395) (5,580) (5,580) (5,580)
Loss Applicable To Common Stockholders $ (16,671) $ (13,414) $ (14,354) $ (15,995) $ (4,905) $ (15,470) $ (6,198) $ (17,690) $ (60,434) $ (44,263) $ (47,781)
Loss applicable to common stock, per share                      
Basic (in dollars per share) $ (0.25) $ (0.20) $ (0.21) $ (0.24) $ (0.07) $ (0.23) $ (0.09) $ (0.26) $ (0.90) $ (0.66) $ (0.71)
Diluted (in dollars per share) $ (0.25) $ (0.20) $ (0.21) $ (0.24) $ (0.07) $ (0.23) $ (0.09) $ (0.26) $ (0.90) $ (0.66) $ (0.71)
Weighted average number of shares of common stock outstanding                      
Basic (in shares) 67,060,440 67,040,692 67,029,610 67,027,104 67,027,104 66,992,322 66,977,104 66,977,104 67,039,556 66,993,543 66,903,457
Diluted (in shares) 67,060,440 67,040,692 67,029,610 67,027,104 67,027,104 66,992,322 66,977,104 66,977,104 67,039,556 66,993,543 66,903,457