Quarterly report pursuant to Section 13 or 15(d)

Earnings (Loss) Per Share - Narrative (Details)

v3.19.2
Earnings (Loss) Per Share - Narrative (Details) - $ / shares
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Common stock, par value (in dollars per share) $ 0.01   $ 0.01   $ 0.01
Number of common stock warrant and common stock options exercised (in shares) 0 332,000 24,877 332,000  
Number of common stock issued for stock warrant and stock options exercised (in shares) 0 145,677 19,232 145,677  
Shares surrendered in lieu of cash payment (in shares)   186,323 5,645 186,323  
Common Stock          
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Dilutive potential shares (in shares)     68,933,402 61,760,134