Segment Information - Additional Information (Detail) (USD $)	3 Months Ended	0 Months Ended		1 Months Ended		0 Months Ended	3 Months Ended	0 Months Ended	3 Months Ended			1 Months Ended
	Mar. 31, 2014 Segment	Jun. 30, 2012 Gold Peak [Member]	Mar. 13, 2012 Gold Peak [Member]	Mar. 31, 2012 Gold Peak [Member]	Sep. 30, 2009 Gold Peak [Member] acre Segment	Aug. 03, 2012 Gold Peak [Member] First Installment [Member]	Mar. 31, 2014 Gold Peak [Member] First Installment [Member]	Oct. 15, 2012 Gold Peak [Member] Second Installment [Member]	Mar. 31, 2014 Gold Peak [Member] Second Installment [Member]	Mar. 31, 2014 Reis Services [Member] Subscriber	Mar. 31, 2013 Reis Services [Member]	Apr. 28, 2014 Reis Services [Member] Subsequent Event [Member]	Mar. 31, 2014 Reis Services [Member] Minimum [Member] Subscriber	Mar. 31, 2014 Reis Services [Member] Maximum [Member]
Segment Reporting Information [Line Items]
Numbers of segments	2
Threshold percentage of Reis Service's revenue by subscribers										3.00%	3.60%
Number of subscribers contributing largest share among major accounts receivable										10			6
Aggregate percentage of accounts receivable accounted for by subscribers										38.70%
Percentage of accounts receivable accounted for by major subscribers													4.00%	4.90%
Payments received against accounts receivable												$ 2,682,000
Percentage collected from trade accounts receivable												51.30%
Threshold percentage of deferred revenue by subscribers										4.60%
Number of units					259
Number of acres prior to sale					29
Litigation charge regarding construction defects			18,200,000	18,200,000
Other charges regarding construction defects			756,000
Settlement with the plaintiff		17,000,000
Installment amount due						$ 5,000,000		$ 12,000,000
Installment due date							Aug. 03, 2012		Oct. 15, 2012