XML 105 R89.htm IDEA: XBRL DOCUMENT v3.7.0.1
Benefit Plans - Schedule of Fair Value Hierarchy, the Company's Pension Plan Assets (Detail) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]    
Total $ 3,693 $ 4,264
Fixed Income Funds [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Total   1,720
Equity Funds [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Total   2,544
Cash and Cash Equivalents [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Total 3,693  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Total 3,693 4,264
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fixed Income Funds [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Total   1,720
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Funds [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Total   $ 2,544
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Cash and Cash Equivalents [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Total $ 3,693