XML 128 R114.htm IDEA: XBRL DOCUMENT v3.10.0.1
Subsequent Events - Additional Information (Detail) - Subsequent Event [Member] - USD ($)
$ in Millions
2 Months Ended
Apr. 01, 2019
Feb. 06, 2019
Jan. 01, 2019
Feb. 27, 2019
Subsequent Event [Line Items]        
Stock repurchased, shares       400,000
Stock repurchased, value       $ 7.0
Renewal period of share repurchase 1 year 15 years    
Stock repurchase program authorized to be repurchased 5,000,000      
Wenner Group [Member]        
Subsequent Event [Line Items]        
Business acquisition, annualized revenue     $ 2.4