XML 95 R79.htm IDEA: XBRL DOCUMENT v3.19.3
Summary of Significant Accounting Policies - Calculation of Net Loss and Number of Shares Used to Compute Basic and Diluted Earnings per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2019
Mar. 31, 2019
Jun. 30, 2018
Mar. 31, 2018
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
Dec. 31, 2017
Accounting Policies [Abstract]                
Net (loss) income $ (5,959) $ (7,894) $ (6,658) $ 7,185 $ (13,853) $ 527 $ (19,222) $ (45,117)
Preferred stock dividends               (527)
Net loss - diluted         $ (13,853) $ (92) $ (19,222) $ (45,644)
Weighted average number of basic shares outstanding 71,303,364 [1]   916,706 [1]   72,069,390 [1] 788,512 [1] 26,705,375 14,039
Weighted average number of diluted shares outstanding 71,303,364 [1]   916,706 [1]   72,069,390 [1] 799,430 [1] 26,705,375 14,039
Basic (loss) income per common share $ (0.08) [1]   $ (7.26) [1]   $ (0.19) [1] $ 0.67 [1] $ (0.72) $ (3,250)
Diluted loss per common share $ (0.08) [1]   $ (7.26) [1]   $ (0.19) [1] $ (0.12) [1] $ (0.72) $ (3,250)
[1] reflects a one-for-five hundred (1:500) reverse stock split effected on May 2, 2018.