Annual report pursuant to Section 13 and 15(d)

Derivative Financial Instruments - Additional Information (Detail)

v3.3.1.900
Derivative Financial Instruments - Additional Information (Detail) - Industrial Revenue Bond
$ in Millions
Dec. 31, 2014
USD ($)
swap
Derivative Instruments, Gain (Loss)  
Number of interest rate swap | swap 1
Notional amount of interest rate swap | $ $ 1.5