Annual report pursuant to Section 13 and 15(d)

Line of Credit and Short-Term Borrowings - Additional Information (Detail)

v3.6.0.2
Line of Credit and Short-Term Borrowings - Additional Information (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Jun. 30, 2015
Debt Instrument [Line Items]      
Short-term borrowings $ 6,086,000 $ 59,000  
Line of Credit [Member]      
Debt Instrument [Line Items]      
Maximum amount of credit facility     $ 250,000,000
Maturity date of credit agreement Jun. 30, 2020    
Line of credit facility, interest rate Borrowings bear interest at the Company’s election based on (a) LIBOR or (b) the greater of (i) the Prime Rate, (ii) the Federal Funds Rate plus 0.5% and (iii) LIBOR for a 30-day period plus 1.0%, in each case, plus an applicable margin based on the average daily principal balance of revolving loans available under the Credit Agreement.    
Unused line of credit fee 0.25%    
Debt closing and arrangement fees $ 1,100,000    
Line of credit facility, expiration period 5 years    
Line of credit facility, outstanding amount $ 100,000 $ 100,000  
Line of Credit [Member] | Federal Funds Rate [Member]      
Debt Instrument [Line Items]      
Interest rate of line of credit agreement 0.50%    
Line of Credit [Member] | LIBOR Loans [Member]      
Debt Instrument [Line Items]      
Interest rate of line of credit agreement 1.00%    
Line of Credit [Member] | Maximum [Member]      
Debt Instrument [Line Items]      
Line of credit, increase     $ 100,000,000
Joint Venture [Member] | India [Member]      
Debt Instrument [Line Items]      
Short-term borrowings $ 6,000,000