XML 15 R65.htm IDEA: XBRL DOCUMENT v3.19.2
Note 12 - Stock-based Compensation (Details Textual) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2019
Jul. 31, 2019
Jul. 31, 2019
Common Class A [Member] | Karl Lopker [Member]      
Number of Vested Stock Appreciation Rights Owned by Deceased Individual, Exercisable by Estate   877,500 877,500
Common Class B [Member] | Karl Lopker [Member]      
Number of Vested Stock Appreciation Rights Owned by Deceased Individual, Exercisable by Estate   127,500 127,500
Performance Shares [Member]      
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total   $ 3,500,000 $ 3,500,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition     1 year 328 days
Restricted Stock Units (RSUs) [Member]      
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation   76,000 80,000
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation   $ 3,200,000 $ 3,300,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total   $ 24,100,000 $ 24,100,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition     3 years 36 days
Stock Appreciation Rights (SARs) [Member]      
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation   2,000 4,000
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation   $ 98,000 $ 200,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total   $ 3,400,000 $ 3,400,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition     2 years 182 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value     $ 500,000
Minimum [Member] | Common Class A and B [Member] | Karl Lopker [Member]      
Vested Stock Appreciation Rights Owned by Deceased Individual, Exercisable by Estate, Exercise Price   $ 10.50 $ 10.50
Minimum [Member] | Performance Shares [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Target Award Vesting Rights, Percentage 0.00%    
Maximum [Member] | Common Class A and B [Member] | Karl Lopker [Member]      
Vested Stock Appreciation Rights Owned by Deceased Individual, Exercisable by Estate, Exercise Price   $ 31.65 $ 31.65
Maximum [Member] | Performance Shares [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Target Award Vesting Rights, Percentage 200.00%