XML 112 R97.htm IDEA: XBRL DOCUMENT v3.20.4
Share-Based Employee Compensation - Shares Authorized, Available for Future Grant and Outstanding Under Each Plans (Detail)
Dec. 31, 2020
shares
Equity Incentive Plan [Line Items]  
Authorized (in shares) 34,000,000
Available (in shares) 9,218,000
Outstanding (in shares) 2,336,000
2004 Plan  
Equity Incentive Plan [Line Items]  
Authorized (in shares) 33,000,000
Available (in shares) 8,652,000
Outstanding (in shares) 2,262,000
2013 Directors Plan  
Equity Incentive Plan [Line Items]  
Authorized (in shares) 1,000,000
Available (in shares) 566,000
Outstanding (in shares) 74,000