Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Additional Information (Detail)

v2.4.0.6
Commitments and Contingencies - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended 1 Months Ended 1 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
May 31, 2012
Yardi Law Suit
Dec. 31, 2012
Yardi Law Suit
Aug. 31, 2012
Reimbursement Payment
Loss Contingencies [Line Items]            
Lease of office space and equipment under capital and operating leases, expiration year 2016          
Lease rent expense $ 8.4 $ 7.4 $ 6.5      
Settlement agreement terms The Settlement Agreement also includes a license of certain Yardi intellectual property to the Company and a license of certain of our intellectual property to Yardi.          
License from Yardi, intangible asset 3.0          
License to Yardi, other revenue, deferred 1.0          
Settlement of all outstanding legal disputes 8.5          
Intangible assets amortization description Amortized as a cost of revenue over its estimated useful life, beginning in July 2012          
Receipt of claim from primary insurance carrier       5.0   5.0
Policy coverage in excess of total coverage by different insurance carrier         5.0  
Assertion by primary insurance carrier no longer liable of already paid amount         $ 5.0  
Lawsuit filing date On August 12, 2012