Securities (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014 security
Marketable Securities [Abstract]
Marketable securities, restricted, Total at cost	$ 118,671
Marketable securities, restricted, Total at FVM	117,189
Held-to-maturity Securities, Transferred Security, at Carrying Value	21,482
TransferHeldToMaturitytoAvailableForSaleUnrealizedGainsLosses	961
Weighted average yields on tax-exempt obligations rate	34.00%
Number of securities in the portfolio with an unrealized loss for a period greater than 12 months	56
Maximum unrealized loss of as security for a period greater than 12 months	$ (2,859)