Fair Value (Narrative) (Details) (USD $)	0 Months Ended		6 Months Ended
	May 31, 2013	Mar. 22, 2013	Jun. 30, 2013	Jun. 30, 2012
Fair Value [Abstract]
Unpaid principal balance of loans acquired	$ 134,500,000	$ 17,700,000	$ 152,200,000
Payments to acquire mortgage loan portfolio			119,758,049
Accretable yield of loans acquired during period	68,400,000		83,400,000
Mortgage loans, total accretable yield			$ 82,400,000