Real Estate and Other Assets Owned - Summary of Activity in Company's Real Estate and Other Assets Owned (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	$ 1,736	$ 1,927
Foreclosures	12	843
Proceeds/Sales	(282)	(318)
Reduction in Values	0	0
Gain (Loss) on Sale	(9)	(716)
Ending balance	1,457	1,736
One-to-Four Family Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	55	159
Foreclosures		105
Proceeds/Sales		(194)
Reduction in Values	0	0
Gain (Loss) on Sale		(15)
Ending balance	55	55
Land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	943	1,768
Proceeds/Sales		(124)
Reduction in Values	0	0
Gain (Loss) on Sale		(701)
Ending balance	943	943
Non-Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	738
Foreclosures		738
Proceeds/Sales	(270)
Reduction in Values	0	0
Gain (Loss) on Sale	(9)
Ending balance	459	$ 738
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Foreclosures	12
Proceeds/Sales	(12)
Reduction in Values	$ 0