Annual report pursuant to Section 13 and 15(d)

CAPITAL TRANSACTIONS Restricted Stock Units (Details)

v3.8.0.1
CAPITAL TRANSACTIONS Restricted Stock Units (Details)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2017
USD ($)
installment
$ / shares
shares
Dec. 31, 2016
USD ($)
installment
$ / shares
shares
Dec. 31, 2015
USD ($)
installment
$ / shares
shares
RSUs      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Finnerty Model discount for lack of marketability 11.90%    
Share-based compensation expense | $ $ 2.0 $ 2.4 $ 2.9
Unrecognized share-based compensation expense, options | $ $ 1.3 $ 2.0  
Weighted-average period over which the remaining compensation expense is expected to be recognized 1 year 2 months    
Unrecognized share-based compensation expense, other than options | $ $ 3.5    
Minimum statutory withholding requirements that the Company pays on behalf of its employees | shares 43,000 20,000  
2012 Stock Incentive Plan | RSUs      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 1 year 1 year 1 year
Granted (in shares) | shares 274,000 281,000 679,000
Granted (in dollars per share) | $ / shares $ 12.62 $ 9.49 $ 12.61
Number of monthly installments for vesting of stock awards | installment 12 12 12
2012 Stock Incentive Plan | RSUs | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 12 months    
2012 Stock Incentive Plan | RSUs | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 48 months    
2012 Stock Incentive Plan | Time-based RSUs      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 3 years 3 years  
Granted (in dollars per share) | $ / shares $ 12.29 $ 10.06  
2012 Stock Incentive Plan | Performance-based RSUs      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 3 years 3 years 3 years
Granted (in dollars per share) | $ / shares $ 13.35 $ 8.16 $ 12.13
2012 Stock Incentive Plan | Board of Directors | RSUs      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Restriction period 2 years    
Number of shares subject to restriction period | shares 96,000 69,000