Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Details)

v3.8.0.1
Stockholders' Equity (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of Shares, Granted (in shares)   164,976
Weighted Average Grant Date Fair Value, Granted (in dollars per share) $ 2.49 $ 7.73
Restricted Stock [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of Shares, Non-vested, December 31 (in shares) 147,000 69,000
Number of Shares, Granted (in shares) 182,000 103,000
Number of Shares, Vested (in shares) (137,000) (24,000)
Number of Shares, Forfeited (in shares) (2,000) (1,000)
Number of Shares, Non-vested, December 31 (in shares) 190,000 147,000
Weighted Average Grant Date Fair Value, Non-vested, December 31 (in dollars per share) $ 26.26 $ 61.10
Weighted Average Grant Date Fair Value, Granted (in dollars per share) 3.41 10.5
Weighted Average Grant Date Fair Value, Vested (in dollars per share) 17.35 60
Weighted Average Grant Date Fair Value, Forfeited (in dollars per share) 3.87 14.6
Weighted Average Grant Date Fair Value, Non-vested, December 31 (in dollars per share) $ 11.07 $ 26.26
Total Grant Date Fair Value, Non-vested, December 31 $ 3,862 $ 4,226
Total Grant Date Fair Value, Granted 621 1,076
Total Grant Date Fair Value, Vested 2,373 (1,428)
Total Grant Date Fair Value, Forfeited 0 (12)
Total Grant Date Fair Value, Non-vested, December 31 $ 6,856 $ 3,862