Derivative Instruments (Schedule of Information Related to Derivative Instruments) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Interest Rate Swaption [Member]
Derivative [Line Items]
Notional amount	$ 225,000,000
Interest Rate Swaps [Member]
Derivative [Line Items]
Notional amount	17,200,000	17,200,000
Loan Purchase Commitments [Member]
Derivative [Line Items]
Notional amount	1,905,700
Interest Rate Lock Commitments [Member]
Derivative [Line Items]
Notional amount	118,486,590
MBS Forward Sales Contracts [Member]
Derivative [Line Items]
Notional amount	$ 154,000,000