XML 60 R49.htm IDEA: XBRL DOCUMENT v3.8.0.1
Stock-Based Compensation - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Jun. 14, 2017
Mar. 31, 2018
Mar. 31, 2017
Jun. 13, 2017
Share-based Compensation Arrangement by Share-based Payment Award        
Stock-based compensation expense   $ 0.8 $ 0.7  
Restricted Stock        
Share-based Compensation Arrangement by Share-based Payment Award        
Restricted stock granted (in shares)   131,065    
Restricted stock granted, grant date fair value (in dollars per share)   $ 13.35    
Employee restricted stock award, vesting period   2 years    
Non-employee restricted stock award vest grant over period   1 year    
Nonvested restricted shares outstanding (in shares)   135,484    
Unrecognized compensation cost   $ 1.3    
Unrecognized compensation cost, recognition period   24 months    
Restricted Stock | Grant Date        
Share-based Compensation Arrangement by Share-based Payment Award        
Restricted stock award, percentage vested on grant date   33.33%    
Restricted Stock | First Anniversary        
Share-based Compensation Arrangement by Share-based Payment Award        
Restricted stock award, percentage vested on grant date   33.33%    
Restricted Stock | Second Anniversary        
Share-based Compensation Arrangement by Share-based Payment Award        
Restricted stock award, percentage vested on grant date   33.33%    
Amended and Restated 2013 Equity Incentive Plan        
Share-based Compensation Arrangement by Share-based Payment Award        
Number of additional shares authorized (in shares) 1,000,000      
Number of shares reserved for issuance (in shares) 1,700,000     700,000
Shares available for issuance (in shares)   1,050,269    
Long Term Incentive Plan | Restricted Stock Units (RSUs)        
Share-based Compensation Arrangement by Share-based Payment Award        
Performance period   3 years    
Service period   2 years