Loans Receivable - Carrying Amount (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Carrying amount of purchased impaired loans
Purchased impaired loans	$ 212,000		$ 212,000		$ 1,756,000
Carrying amount, net of allowance ($5 at June 30, 2014 and December 31, 2013)	0		0		5,000
Financing Receivable, Acquired with Deteriorated Credit Quality, net of allowance	212,000		212,000		1,751,000
Allowance for Loan and Lease Losses, Period Increase (Decrease)	(5,000)	51,000	(5,000)	109,000
One-to-four family residential real estate loans [Member]
Carrying amount of purchased impaired loans
Purchased impaired loans	51,000		51,000		100,000
Carrying amount, net of allowance ($5 at June 30, 2014 and December 31, 2013)	0		0		5,000
Multi-family mortgage loans [Member]
Carrying amount of purchased impaired loans
Purchased impaired loans	0		0		0
Carrying amount, net of allowance ($5 at June 30, 2014 and December 31, 2013)	0		0		0
Nonresidential real estate loans [Member]
Carrying amount of purchased impaired loans
Purchased impaired loans	161,000		161,000		1,633,000
Carrying amount, net of allowance ($5 at June 30, 2014 and December 31, 2013)	0		0		0
Commercial loans [Member]
Carrying amount of purchased impaired loans
Purchased impaired loans	$ 0		$ 0		$ 23,000