Annual report pursuant to Section 13 and 15(d)

Stock Option Plans (Summary Of Stock Option Plans) (Detail)

v3.6.0.2
Stock Option Plans (Summary Of Stock Option Plans) (Detail) - shares
Dec. 31, 2016
Dec. 31, 2014
Stock Option Plan [Line Items]    
Outstanding as of December 31, 2016 1,084,298  
Available for future issuance under plan 1,027,375  
Totals authorized by plan 2,111,673  
2007 Plan    
Stock Option Plan [Line Items]    
Outstanding as of December 31, 2016 21,977  
Available for future issuance under plan 0  
Totals authorized by plan 21,977  
2009 Plan    
Stock Option Plan [Line Items]    
Outstanding as of December 31, 2016 132,771  
Available for future issuance under plan 0  
Totals authorized by plan 132,771  
2014 Plan    
Stock Option Plan [Line Items]    
Outstanding as of December 31, 2016 929,550  
Available for future issuance under plan 1,027,375  
Totals authorized by plan 1,956,925 1,000,000