XML 46 R35.htm IDEA: XBRL DOCUMENT v3.10.0.1
Long-Term Debt - Additional Information (Detail)
Sep. 30, 2018
USD ($)
Sep. 30, 2018
EUR (€)
Jul. 31, 2018
Italy [Member]      
Debt Instrument [Line Items]      
Amount outstanding under lines of credit $ 0    
Maximum borrowing capacity 6,700,000 € 5,800,000  
First Amended and Restated Credit Agreement [Member] | Revolving Credit Facility [Member]      
Debt Instrument [Line Items]      
Maximum percentage of voting interests Ppedged in first tier foreign subsidiaries     65.00%
Amount outstanding under lines of credit $ 0