Investment Securities (Held-to-maturity Securities with Unrealized Loss) (Details) $ in Thousands	Sep. 30, 2015 USD ($) securities	Dec. 31, 2014 USD ($) securities
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value	$ 3,892	$ 0
Less than 12 months, unrealized loss	$ 44	$ 0
Less than 12 months, no. of securities | securities	1	0
12 months or more, fair value	$ 16,849	$ 24,921
12 months or more, unrealized loss	$ 316	$ 672
12 months or more, no. of securities | securities	4	7
Total fair value	$ 20,741	$ 24,921
Total unrealized loss	360	672
States and political subdivisions
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value	0	0
Less than 12 months, unrealized loss	$ 0	$ 0
Less than 12 months, no. of securities | securities	0	0
12 months or more, fair value	$ 320	$ 323
12 months or more, unrealized loss	$ 5	$ 7
12 months or more, no. of securities | securities	1	1
Total fair value	$ 320	$ 323
Total unrealized loss	5	7
Residential mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value	3,304	0
Less than 12 months, unrealized loss	$ 36	$ 0
Less than 12 months, no. of securities | securities	1	0
12 months or more, fair value	$ 10,320	$ 18,242
12 months or more, unrealized loss	$ 262	$ 394
12 months or more, no. of securities | securities	2	5
Total fair value	$ 13,624	$ 18,242
Total unrealized loss	298	394
Commercial mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value	588	0
Less than 12 months, unrealized loss	$ 8	$ 0
Less than 12 months, no. of securities | securities	0	0
12 months or more, fair value	$ 6,209	$ 6,356
12 months or more, unrealized loss	$ 49	$ 271
12 months or more, no. of securities | securities	1	1
Total fair value	$ 6,797	$ 6,356
Total unrealized loss	$ 57	$ 271