Investments (Unrealized Gain (Loss) on Investments) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Mar. 31, 2014	Dec. 31, 2013
Schedule of Investments [Line Items]
Amortized Cost	$ 383,748	$ 368,319
Gross Unrealized Gains	2,721	2,119
Gross Unrealized Losses	25,004	33,849
Investment securities - available-for-sale (at fair value)	361,465	336,589
OTTI in AOCI	8,314	12,703
Held-to-maturity Amortized cost	2,860	3,900
Investment securities - HTM	2,444	3,590
US Treasury Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	23,500
Gross Unrealized Gains	0
Gross Unrealized Losses	0
Investment securities - available-for-sale (at fair value)	23,500
OTTI in AOCI	0
US government agencies [Member]
Schedule of Investments [Line Items]
Amortized Cost	89,761	97,242
Gross Unrealized Gains	84	14
Gross Unrealized Losses	3,880	5,221
Investment securities - available-for-sale (at fair value)	85,965	92,035
OTTI in AOCI	0	0
Residential mortgage-backed agencies [Member]
Schedule of Investments [Line Items]
Amortized Cost	113,815	116,933
Gross Unrealized Gains	347	334
Gross Unrealized Losses	3,710	4,823
Investment securities - available-for-sale (at fair value)	110,452	112,444
OTTI in AOCI	0	0
Commercial mortgage-backed agencies [Member]
Schedule of Investments [Line Items]
Amortized Cost	39,296	31,025
Gross Unrealized Gains	63	14
Gross Unrealized Losses	1,021	1,134
Investment securities - available-for-sale (at fair value)	38,338	29,905
OTTI in AOCI	0	0
Collateralized mortgage obligations [Member]
Schedule of Investments [Line Items]
Amortized Cost	29,498	30,468
Gross Unrealized Gains	75	84
Gross Unrealized Losses	573	1,162
Investment securities - available-for-sale (at fair value)	29,000	29,390
OTTI in AOCI	0	0
Obligations of states and political subdivisions [Member]
Schedule of Investments [Line Items]
Amortized Cost	50,629	55,505
Gross Unrealized Gains	1,177	895
Gross Unrealized Losses	689	1,123
Investment securities - available-for-sale (at fair value)	51,117	55,277
OTTI in AOCI	0	0
Held-to-maturity Amortized cost	2,860	3,900
Held-to-maturity gross Unrealized Gains	0	249
Held-to-maturity Gross Unrealized Losses	416	559
Investment securities - HTM	2,444	3,590
Held-to-maturity OTTI in AOCI	0	0
Collateralized debt obligations [Member]
Schedule of Investments [Line Items]
Amortized Cost	37,249	37,146
Gross Unrealized Gains	975	778
Gross Unrealized Losses	15,131	20,386
Investment securities - available-for-sale (at fair value)	23,093	17,538
OTTI in AOCI	$ 8,314	$ 12,703

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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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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