XML 105 R58.htm IDEA: XBRL DOCUMENT v3.19.3
Share-Based Compensation - Narrative (Details) - USD ($)
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]          
Repurchase of common stock for employee tax withholding obligations amount     $ 3,019,000 $ 1,179,000  
2017 Plan          
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]          
Useful Life of the plan     10 years    
Common stock shares issuable 1,750,000   1,750,000    
Shares available for grant 1,582,828   1,582,828    
2007 Plan          
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]          
Award vesting period     3 years    
2007 Plan | Performance Unit Incentive Plan (“PUP”)          
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]          
Awards with grant date fair value during the period     $ 4,300,000    
Stock value payable     1,700,000    
Liability awards recorded $ 5,100,000   5,100,000   $ 7,000,000.0
Payments to employees     $ 5,600,000   5,900,000
Repurchase of common stock for employee tax withholding obligations amount, shares     25,771    
Repurchase of common stock for employee tax withholding obligations amount     $ 1,500,000    
Paid to employees as shares     $ 3,400,000    
2007 Plan | Restricted Stock          
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]          
Repurchase of common stock for employee tax withholding obligations amount, shares     24,586 21,767  
Repurchase of common stock for employee tax withholding obligations amount     $ 1,400,000 $ 1,200,000  
Unamortized cost 3,300,000   $ 3,300,000    
Recognition period of unrecognized cost     1 year 3 months 18 days    
2007 Plan | Restricted Stock Units          
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]          
Payments to employees     $ 300,000 200,000  
Liabilities related to restricted stock 400,000   400,000   $ 400,000
Payments to employees in shares     200,000    
Restructuring Charges          
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]          
Share-based compensation before income tax benefit $ 0 $ 0 $ 0 $ 0