XML 69 R58.htm IDEA: XBRL DOCUMENT v3.8.0.1
Note 8 - Stock-based Compensation (Details Textual) - USD ($)
3 Months Ended 111 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2018
Allocated Share-based Compensation Expense, Total $ 3,400,000 $ 3,100,000  
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense $ 700,000 $ 1,000,000  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 0 0 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number 1,200   1,200
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price $ 13.91   $ 13.91
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period 0 0  
Restricted Stock Units (RSUs) [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 274,990 276,900  
Restricted Stock Units (RSUs) [Member] | Omnibus Plan 2014 [Member]      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total $ 11,900,000   $ 11,900,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 3 years 109 days    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value $ 6,700,000 $ 7,000,000  
Phantom Share Units (PSUs) [Member] | Phantom Stock Plan [Member]      
Allocated Share-based Compensation Expense, Total 37,000 200,000  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value $ 1,000 $ 6,000  
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period 1 year