Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt - Summary of Interest Received and Paid under Term of Cash Flow Swap (Parenthetical) (Detail)

v2.4.0.8
Long-Term Debt - Summary of Interest Received and Paid under Term of Cash Flow Swap (Parenthetical) (Detail)
6 Months Ended
Jun. 30, 2014
Derivatives, Fair Value [Line Items]  
One-month LIBOR rate 0.152%
Receive Rate One-month LIBOR
Swap agreement effective date Jul. 01, 2015
Cash Flow Swap 13 [Member]
 
Derivatives, Fair Value [Line Items]  
Receive Rate one-month LIBOR
Swap agreement effective date Jul. 01, 2016
Cash Flow Swap 14 [Member]
 
Derivatives, Fair Value [Line Items]  
Receive Rate one-month LIBOR
Swap agreement effective date Jul. 03, 2017