XML 88 R59.htm IDEA: XBRL DOCUMENT v2.4.1.9
Investments in and Advances to Joint Ventures - Condensed Combined Financial Information of Company's Unconsolidated Joint Venture Investments (Parenthetical) (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Statement Of Financial Position [Abstract]    
Amounts receivable from joint ventures $ 2.1us-gaap_DueFromJointVentures $ 2.7us-gaap_DueFromJointVentures