Investment Securities (Unrealized Gain (Loss) on Investments) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
Schedule Of Available-For-Sale and Held-to-Maturity Securities Table [Line Items]
Amortized cost	$ 287,948		$ 194,538
Gross unrealized gains	4,563		4,024
Gross unrealized losses	(2,765)		(4,081)
Estimated fair value	289,746		194,481
Amortized cost	155,454		1,320
Gross unrealized gains	1,120		22
Gross unrealized losses	(120)		0
Estimated fair value	156,454		1,342
U.S. Agency mortgage-backed securities (MBS)
Schedule Of Available-For-Sale and Held-to-Maturity Securities Table [Line Items]
Amortized cost	233,149	[1]	171,853	[1]
Gross unrealized gains	3,688	[1]	3,125	[1]
Gross unrealized losses	(2,083)	[1]	(3,646)	[1]
Estimated fair value	234,754	[1]	171,332	[1]
Amortized cost	112,747
Gross unrealized gains	630
Gross unrealized losses	(76)
Estimated fair value	113,301
Non-Agency MBS
Schedule Of Available-For-Sale and Held-to-Maturity Securities Table [Line Items]
Amortized cost	38,685		13,500
Gross unrealized gains	75		11
Gross unrealized losses	(360)		(414)
Estimated fair value	38,400		13,097
U.S. Agency asset-backed securities
Schedule Of Available-For-Sale and Held-to-Maturity Securities Table [Line Items]
Amortized cost	8,306		8,683
Gross unrealized gains	791		887
Gross unrealized losses	(45)		(21)
Estimated fair value	9,052		9,549
Corporate securities
Schedule Of Available-For-Sale and Held-to-Maturity Securities Table [Line Items]
Amortized cost	7,297
Gross unrealized gains	0
Gross unrealized losses	(277)
Estimated fair value	7,020
Mutual fund
Schedule Of Available-For-Sale and Held-to-Maturity Securities Table [Line Items]
Amortized cost	511		502
Gross unrealized gains	9		1
Gross unrealized losses	0		0
Estimated fair value	520		503
Obligations of state and political subdivisions
Schedule Of Available-For-Sale and Held-to-Maturity Securities Table [Line Items]
Amortized cost	42,133		706
Gross unrealized gains	490		22
Gross unrealized losses	(44)		0
Estimated fair value	42,579		728
Tax credit investments
Schedule Of Available-For-Sale and Held-to-Maturity Securities Table [Line Items]
Amortized cost	574		614
Gross unrealized gains	0		0
Gross unrealized losses	0		0
Estimated fair value	574		614
Private Label Mortgage Backed Securities
Schedule Of Available-For-Sale and Held-to-Maturity Securities Table [Line Items]
Estimated fair value	$ 9,900		$ 11,300

[1] U.S. Agency MBS include private label MBS of approximately $9.9 million and $11.3 million at September 30, 2014 and December 31, 2013, respectively, which are supported by FHA/VA collateral.