XML 49 R53.htm IDEA: XBRL DOCUMENT v3.20.1
Stock and Stock Options - Summary of Market-Based Restricted Stock and Unit Award Activity (Details) - Market-Based Restricted Stock and Unit Awards
12 Months Ended
Dec. 31, 2019
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]  
Unvested restricted stock, Shares, beginning balance (in shares) | shares 272,208
Shares, Granted (in shares) | shares 0
Shares, Vested (in shares) | shares 0
Shares, Canceled (in shares) | shares (195,121)
Unvested restricted stock, Shares, Ending balance (in shares) | shares 77,087
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]  
Unvested restricted stock, Weighted average grant date fair value per share, Beginning balance (in usd per share) | $ / shares $ 6.16
Weighted average grant date fair value per share, Granted (in usd per share) | $ / shares 0.00
Weighted average grant date fair value per share, Vested (in usd per share) | $ / shares 0
Weighted average grant date fair value per share, Canceled (in usd per share) | $ / shares 5.99
Unvested restricted stock, Weighted average grant date fair value per share, Ending balance (in usd per share) | $ / shares $ 6.59