Reverse Mortgage and Related Assets - Summary of Estimated Cash Payments to Reverse Mortgagors (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014
Mortgage Banking [Abstract]
Remaining in 2014	$ 416
2015	749
2016	599
2017	473
2018	371
Years 2019 - 2023	894
Years 2024 - 2028	198
Years 2029 - 2033	33
Thereafter	4
Total	$ 3,737