Segments - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Segment Reporting Information [Line Items]
General contracting and real estate services revenues	$ 19,234
General contracting and real estate services expenses	17,985
Non-cash stock compensation	329
General and Administrative Expense [Member]
Segment Reporting Information [Line Items]
Non-cash stock compensation	200
General Contracting and Real Estate Services [Member]
Segment Reporting Information [Line Items]
General contracting and real estate services revenues	19,234	17,956
General contracting and real estate services expenses	17,985	17,458
Non-cash stock compensation	100
Intersegment Eliminations [Member] | General Contracting and Real Estate Services [Member]
Segment Reporting Information [Line Items]
General contracting and real estate services revenues	18,700	2,000
General contracting and real estate services expenses	$ 18,500	$ 2,000