Annual report pursuant to Section 13 and 15(d)

Supplemental Cash Flow Information - Supplemental Cash Flow Information (Parenthetical) (Detail)

v2.4.0.6
Supplemental Cash Flow Information - Supplemental Cash Flow Information (Parenthetical) (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Cash paid, interest capitalized $ 13,274 $ 9,877 $ 5,395