XML 127 R110.htm IDEA: XBRL DOCUMENT v3.3.1.900
Pension Plans and other Postretirement Benefits - Amortization of Amounts in Accumulated Other Comprehensive Income Expected to be Recognized as Components of Net Periodic Benefit Expense (Detail)
$ in Thousands
12 Months Ended
Dec. 31, 2015
USD ($)
Pension Benefits [Member]  
Pension Plans, Postretirement and Other Employee Benefits [Line Items]  
Amortization of net prior service credit $ (3,228)
Amortization of net loss 30,912
Other Postretirement Benefits [Member]  
Pension Plans, Postretirement and Other Employee Benefits [Line Items]  
Amortization of net prior service credit (1,359)
Amortization of net loss $ 8