Reverse Mortgage Loans - Summary of Estimated Cash Payments to Reverse Mortgagors (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015
Mortgage Banking [Abstract]
Remaining in 2015	$ 515
2016	548
2017	438
2018	344
2019	269
Years 2020 - 2024	633
Years 2025 - 2029	130
Years 2030 - 2034	20
Thereafter	2
Total	$ 2,899

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Cash Payments To Reverse Mortgagors Estimated Amount Remainder Of Fiscal Year

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Cash Payments To Reverse Mortgagors Estimated Amount Year Eleven To Fifteen

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Cash Payments To Reverse Mortgagors Estimated Amount Year Sixteen To Twenty

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Cash Payments To Reverse Mortgagors Estimated Amount Year Thereafter

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