Loans Receivable and Allowance for Loan Losses (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended	6 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Residential Non-performing loans held-for-sale, net	Jun. 30, 2014 Residential Non-performing loans held-for-sale, net	Sep. 12, 2014 Residential Non-performing loans held-for-sale, net	Jul. 31, 2014 Residential Non-performing loans held-for-sale, net
Loans receivable and allowance for loan losses
Amount of loan charge-off	$ 4,904,000	$ 6,496,000	$ 27,370,000	$ 27,954,000		$ 8,700,000
Loans held-for-sale, recorded investment						195,000,000
Non-performing residential mortgage loans held-for-sale						186,300,000
Provision (credited) charged to operations	(3,042,000)	2,541,000	(7,153,000)	16,193,000		(5,700,000)
Carrying value, loans sold							4,000,000	173,700,000
Loss on sale of loans					920,000
Length of period one over which the historical loss experience is analyzed			12 months
Length of period two over which the historical loss experience is analyzed			15 months
Length of period three over which the historical loss experience is analyzed			18 months
Length of period four over which the historical loss experience is analyzed			24 months
Minimum length of period over which the historical loss experience is analyzed for a particular loan type that may not have sufficient loss history			2 years
Extended prior period over which loss experience factors are evaluated to consider trends for the majority of loan portfolio			2 years
Loans, in foreclosure	$ 18,700,000		$ 18,700,000