Consolidated Financial Statements - Additional Information (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2016 USD ($) Dwellings Segment
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Number of concentration by bank to lessors and owners of Residential Buildings and Dwellings | Dwellings	2
Non Residential Buildings and Dwellings [Member]
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Amount payable to lessors	$ 232,196
Amount payable to lessors in percentage	23.00%
Residential Buildings and Dwellings [Member]
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Amount payable to lessors	$ 124,209
Amount payable to lessors in percentage	12.30%
Maximum [Member]
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Percentage of insurance commission revenue of total revenue	1.00%
WSP [Member]
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Number of reportable segment | Segment	1
WSP [Member] | Maximum [Member]
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Percentage of insurance commission revenue of total revenue	1.00%