Quarterly report pursuant to Section 13 or 15(d)

Share-Based Payments - Non-employee Director Non-vested Shares (Details)

v3.20.2
Share-Based Payments - Non-employee Director Non-vested Shares (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
1 Months Ended 9 Months Ended
May 31, 2016
Sep. 30, 2020
Sep. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based compensation expense   $ 7,852 $ 8,536
Nonemployee Director Nonvested Shares Granted Member      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of Additional Shares Authorized 160    
Number of Shares Authorized   360  
Number of Shares Available for Grant   92  
Continuing Operations [Member] | Nonemployee Director Nonvested Shares Granted Member      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Outstanding and non-vested, beginning of period (in shares)   16  
Grants in Period   24  
Shares Vested in Period   (16)  
Outstanding and non-vested, end of period (in shares)   24  
Outstanding and non-vested, weighted-average grant date fair value, beginning of period   $ 62  
Grants in Period, Weighted Average Grant Date Fair Value   43  
Vested in Period, Weighed-average grant date fair value   62  
Outstanding and non-vested, weighted-average grant date fair value, end of period   $ 43  
Outstanding and non-vested, aggregate grant date fair value   $ 1,035  
Share-based compensation expense   766 714
Tax benefit related to share-based expense   198 184
Unrecognized share-based compensation, net of estimated forfeitures   $ 636 $ 554
Weighted average period over which unrecognized compensation will be recognized (years)   7 months 6 days