Annual report pursuant to Section 13 and 15(d)

NET INCOME (LOSS) PER COMMON SHARE (Details)

v3.19.1
NET INCOME (LOSS) PER COMMON SHARE (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Earnings Per Share [Abstract]                      
Net income (loss)                 $ (2,332) $ 18,009 $ 19,428
Basic earnings (loss) per common share:                      
Weighted average shares outstanding (in shares)                 24,438,000 24,294,000 24,284,000
Per share amount (in dollars per share) $ (0.22) $ (0.07) $ 0.09 $ 0.10 $ 0.58 $ 0.07 $ 0.03 $ 0.06 $ (0.10) $ 0.74 $ 0.80
Diluted earnings (loss) per common share:                      
Weighted average shares outstanding (in shares)                 24,438,000 25,129,000 24,982,000
Per share amount (in dollars per share) $ (0.22) $ (0.07) $ 0.09 $ 0.09 $ 0.56 $ 0.07 $ 0.03 $ 0.06 $ (0.10) $ 0.72 $ 0.78
Weighted average shares outstanding (in shares)                 24,438,000 24,294,000 24,284,000
Unvested restricted stock unit grant (in shares)                 0 367,000 310,000
Effect of dilutive stock options (in shares)                 0 468,000 388,000
Weighted average shares, as adjusted denominator diluted computation (in shares)                 24,438,000 25,129,000 24,982,000
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]                      
Potential common stock shares issuable (in shares)                 745,830 1,323,587 1,348,437
Restricted Stock Units                      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]                      
Potential common stock shares issuable (in shares)                 397    
Stock Options                      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]                      
Potential common stock shares issuable (in shares)                 264    
Treasury Stock                      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]                      
Stock exchanged during period (in shares)                 65,000    
AMAK                      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]                      
Stock exchanged during period (in shares)                 24,489