Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity and Stock Based Compensation - Nonvested (Details)

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Stockholders' Equity and Stock Based Compensation - Nonvested (Details)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2019
USD ($)
installment
$ / shares
shares
Dec. 31, 2018
USD ($)
installment
$ / shares
shares
Weighted Average Grant Date Fair Value    
Share-based Payment Arrangement, Expensed and Capitalized, Amount | $ $ 0.0  
Selling, general and administrative expenses    
Weighted Average Grant Date Fair Value    
Share-based compensation cost | $ $ 0.8 $ 2.8
Separation expense | Chief Executive Officer    
Weighted Average Grant Date Fair Value    
Share-based compensation cost | $   $ 1.7
Restricted stock    
Shares    
Nonvested shares at the beginning of the period | shares 96,744 161,818
Granted (in shares) | shares 32,905 123,000
Vested (in shares) | shares (49,197) (180,898)
Forfeited (in shares) | shares (16,530) (7,176)
Nonvested shares at the end of the period | shares 63,922 96,744
Weighted Average Grant Date Fair Value    
Nonvested shares at the beginning of period (in dollars per share) | $ / shares $ 15.67 $ 17.26
Granted (in dollars per share) | $ / shares 11.97 14.97
Vested (in dollars per share) | $ / shares 14.53 16.62
Forfeited (in dollars per share) | $ / shares 14.52 15.44
Nonvested shares at the end of period (in dollars per share) | $ / shares $ 14.94 $ 15.67
Unrecognized compensation cost (in dollars) | $ $ 0.9  
Weighted average period for recognition of unrecognized compensation cost 2 years 2 months 12 days  
Restricted stock | Maximum    
Shares    
Number of equal quarterly installments for vesting of awards | installment 16 20