Investments (Unrealized Gain (Loss) on Investments) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
Sep. 30, 2013	Dec. 31, 2012
Schedule of Investments [Line Items]
Amortized Cost	$ 326,394	$ 245,106
Gross Unrealized Gains	2,176	4,118
Gross Unrealized Losses	31,560	25,951
Investment securities - available-for-sale (at fair value)	297,010	223,273
OTTI in AOCI	13,783	16,876
Held-to-maturity Amortized cost	3,900	4,040
Investment securities - HTM	3,536	4,347
US government agencies [Member]
Schedule of Investments [Line Items]
Amortized Cost	89,723	40,334
Gross Unrealized Gains	85	97
Gross Unrealized Losses	4,365	111
Investment securities - available-for-sale (at fair value)	85,443	40,320
OTTI in AOCI	0	0
Residential mortgage-backed agencies [Member]
Schedule of Investments [Line Items]
Amortized Cost	87,049	43,596
Gross Unrealized Gains	368	703
Gross Unrealized Losses	3,632	191
Investment securities - available-for-sale (at fair value)	83,785	44,108
OTTI in AOCI	0	0
Commercial mortgage-backed agencies [Member]
Schedule of Investments [Line Items]
Amortized Cost	28,174	37,330
Gross Unrealized Gains	11	288
Gross Unrealized Losses	904	0
Investment securities - available-for-sale (at fair value)	27,281	37,618
OTTI in AOCI	0	0
Collateralized mortgage obligations [Member]
Schedule of Investments [Line Items]
Amortized Cost	28,233	31,836
Gross Unrealized Gains	106	188
Gross Unrealized Losses	404	293
Investment securities - available-for-sale (at fair value)	27,935	31,731
OTTI in AOCI	0	0
Obligations of states and political subdivisions [Member]
Schedule of Investments [Line Items]
Amortized Cost	56,172	55,212
Gross Unrealized Gains	1,243	2,842
Gross Unrealized Losses	1,122	0
Investment securities - available-for-sale (at fair value)	56,293	58,054
OTTI in AOCI	0	0
Held-to-maturity Amortized cost	3,900	4,040
Held-to-maturity gross Unrealized Gains	234	542
Held-to-maturity Gross Unrealized Losses	598	235
Investment securities - HTM	3,536	4,347
Held-to-maturity OTTI in AOCI	0	0
Collateralized debt obligations [Member]
Schedule of Investments [Line Items]
Amortized Cost	37,043	36,798
Gross Unrealized Gains	363	0
Gross Unrealized Losses	21,133	25,356
Investment securities - available-for-sale (at fair value)	16,273	11,442
OTTI in AOCI	$ 13,783	$ 16,876

Accumulated other comprehensive loss related to portion of other than temporary impairment (OTTI) due to factors other than credit losses on debt securities categorized as available-for-sale that an entity does not intend to sell and which it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis of the debt security. The amount represented by this item is net of tax, as applicable.

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