XML 59 R48.htm IDEA: XBRL DOCUMENT v3.10.0.1
Share-Based Compensation - Textual (Details)
3 Months Ended 6 Months Ended
Jun. 02, 2017
shares
Jun. 30, 2018
USD ($)
plan
shares
Jun. 30, 2017
USD ($)
Jun. 30, 2018
USD ($)
plan
$ / shares
shares
Jun. 30, 2017
USD ($)
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of plans | plan   5   5  
Share-based compensation expense   $ 110,000 $ 30,000 $ 184,000 $ 233,000
Unrecognized compensation cost related to non-vested share-based compensation arrangements   $ 0   0  
Other than options vested       $ 0 $ 0
Granted (in shares) | shares       0 0
Nonvested and expected to vest (in shares) | shares       78,273  
Employee Stock Purchase Plan (ESPP)          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Offering period 3 months        
Discount from market price 10.00%        
Shares reserved for plan (in shares) | shares 500,000        
Shares available for grant (in shares) | shares   492,500   492,500  
Minimum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Payroll deductions 1.00%        
Minimum | 2005 Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting period       1 year  
Maximum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Payroll deductions 15.00%        
Maximum | 2005 Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting period       5 years  
Stock Options          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Tax benefit of stock option compensation expense   $ 56,000 $ 10,000 $ 139,000 $ 104,000
Restricted Common Stock          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unrecognized compensation cost related to non-vested share-based compensation arrangements   949,000   $ 949,000  
Granted (in dollars per share) | $ / shares       $ 20.75  
Weighted average remaining period       2 years 3 months 10 days  
Intrinsic value   $ 982,000   $ 982,000