Annual report pursuant to Section 13 and 15(d)

Stock Plans and Management Compensation (Details 2)

v3.10.0.1
Stock Plans and Management Compensation (Details 2) - Stock Options and SAR's [Member]
shares in Thousands
12 Months Ended
Dec. 31, 2018
$ / shares
shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Period for Stock Options and SARs to be Exercisable (in years) 10 years
Awards Vesting Period (in years) 4 years
Age of Grantee 62 years
$5.86 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price Range, Lower Range Limit (in dollars per share) $ 5.86
Exercise Price Range, Upper Range Limit (in dollars per share) $ 5.86
Number of Outstanding Options (in shares) | shares 27
Outstanding Options, Weighted Average Remaining Years of Contractual Life (in years) 3 months 18 days
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options | shares 27
Outstanding Options, Weighted Average Exercise Price (in dollars per share) $ 5.86
Exercisable Options, Weighted Average Remaining Years of Contractual Life (in years) 3 months 18 days
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Exercise Price $ 5.86
$5.87 to $14.68 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price Range, Lower Range Limit (in dollars per share) 5.87
Exercise Price Range, Upper Range Limit (in dollars per share) $ 14.68
Number of Outstanding Options (in shares) | shares 154
Outstanding Options, Weighted Average Remaining Years of Contractual Life (in years) 1 year 2 months 12 days
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options | shares 154
Outstanding Options, Weighted Average Exercise Price (in dollars per share) $ 11.32
Exercisable Options, Weighted Average Remaining Years of Contractual Life (in years) 1 year 2 months 12 days
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Exercise Price $ 11.32
Greater Than $14.68 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price Range, Lower Range Limit (in dollars per share) $ 14.68
Number of Outstanding Options (in shares) | shares 162
Outstanding Options, Weighted Average Remaining Years of Contractual Life (in years) 2 years 4 months 24 days
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options | shares 162
Outstanding Options, Weighted Average Exercise Price (in dollars per share) $ 22.27
Exercisable Options, Weighted Average Remaining Years of Contractual Life (in years) 2 years 4 months 24 days
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Exercise Price $ 22.27