Investment Securities (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended			3 Months Ended		6 Months Ended	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Mar. 31, 2014 Transferred From Available-For-Sale to Held-To-Maturity [Member]	Jun. 30, 2014 Transferred From Available-For-Sale to Held-To-Maturity [Member]	Jun. 30, 2014 CLOs [Member]	Dec. 31, 2013 CLOs [Member]
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Carrying value of securities pledged	$ 257,890,000		$ 257,890,000		$ 315,530,000
Securities classified as trading	0		0		0
Impairment charge									166,000
Net gains	17,000	(13,000)	143,000	(13,000)				27,410,000
Securities transferred from available-for-sale to held-to-maturity category, amortized cost			12,626,000			12,630,000
Securities transferred from available-for-sale to held-to-maturity category, fair value						12,640,000
Securities transferred from available-for-sale to held-to-maturity category, unrealized holding loss	0	0	(8,000)	0		8,310,000
Securities transferred from available-for-sale to held-to-maturity, remaining unamortized balance							4,710,000
Securities transferred from available-for-sale to held-to-maturity, remaining unamortized balance, net of tax							$ 3,060,000