Real Estate Activities (Continuing Operations) (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Real Estate Capitalized Costs [Line Items]
Construction in progress	$ 68,835,000	$ 68,619,000
Land held for development	8,716,000	13,240,000
Deferred costs and other assets	97,752,000	97,399,000
Capitalized Construction and Development Activities [Member]
Real Estate Capitalized Costs [Line Items]
Construction in progress	68,800,000	68,600,000
Land held for development	8,700,000	13,200,000
Deferred costs and other assets	1,100,000	3,700,000
Total capitalized construction and development activities	$ 78,600,000	$ 85,500,000