Securities (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Schedule of Trading Securities and Other Trading Assets [Line Items]
Asset-backed securities pledged to secure certain deposits	$ 22,300		$ 21,400
Asset-backed securities pledged as collateral	1,900		1,900
Amount	$ 146,582		$ 139,360
Available for sale securities, average life	3 years 9 months 7 days		4 years 4 months 21 days
Available for sale securities, average duration	3 years 6 months 15 days		4 years 15 days
Held to maturity securities, average life	4 years 2 months 1 day		5 years 26 days
Held to maturity securities, average duration	3 years 9 months 29 days		4 years 6 months 29 days
Available for sale securities with unrealized losses, average life	3 years 11 months 12 days		4 years 5 months 12 days
Available for sale securities with unrealized losses, average duration	3 years 7 months 28 days		4 years 15 days
Amortized cost, available for sale	$ 36,656		$ 35,530
Losses on sales of HTM investment securities		$ 1
Securities held to maturity (HTM), at amortized cost	114,455		109,420
Securities available for sale (AFS), at fair value	36,636		35,116
Estimated Fair Value, held to maturity	115,448		109,309
Gross unrealized losses, available for sale	311		557
Fair value of AFS Securities with unrealized losses	19,300		22,000
Fair value of HTM Securities with unrealized losses	35,400		53,800
Gross unrealized losses, held to maturity	335		941
Held-to-maturity securities sold		$ 68
Residential Mortgage Backed Securities Issued By US Government Sponsored Enterprises [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized cost, available for sale	21		22
Securities held to maturity (HTM), at amortized cost	37,944		34,085
Securities available for sale (AFS), at fair value	25		26
Estimated Fair Value, held to maturity	38,670		34,395
Gross unrealized losses, held to maturity	27		242
Residential Collateralized Mortgage Obligations, Issued By US Government Sponsored Enterprises [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized cost, available for sale	32,286		31,182
Securities held to maturity (HTM), at amortized cost	70,663		73,492
Securities available for sale (AFS), at fair value	32,102		30,664
Estimated Fair Value, held to maturity	71,046		73,171
Gross unrealized losses, available for sale	311		557
Gross unrealized losses, held to maturity	$ 192		$ 599
Asset-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Held to maturity securities with unrealized losses, average life	3 years 7 months 6 days		5 years 5 months 1 day
Held to maturity securities with unrealized losses, average duration	3 years 4 months 6 days		4 years 9 months 11 days
Securities held to maturity (HTM), at amortized cost	$ 113,400		$ 107,600
Fair value of HTM Securities with unrealized losses	34,500		52,800
Gross unrealized losses, held to maturity	$ 235		$ 841
Asset-backed Securities, Issued by Private Enterprises [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Held to maturity securities with unrealized losses, average life	3 years 6 months 15 days		4 years 15 days
Held to maturity securities with unrealized losses, average duration	2 years 9 months 18 days		3 years 3 months 15 days
Securities held to maturity (HTM), at amortized cost	$ 1,000		$ 1,100
Fair value of HTM Securities with unrealized losses	928		992
Gross unrealized losses, held to maturity	100		100
Residential Collateralized Mortgage Obligations, Issued By Private Enterprises [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Securities held to maturity (HTM), at amortized cost	1,028		1,093
Estimated Fair Value, held to maturity	928		993
Gross unrealized losses, held to maturity	100		100
Debt Securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Securities held to maturity (HTM), at amortized cost	109,635		108,670
Estimated Fair Value, held to maturity	110,644		108,559
Gross unrealized losses, held to maturity	319		941
Corporate Equity Securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized cost, available for sale	37		37
Securities available for sale (AFS), at fair value	39		39
Bond Mutual Funds [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized cost, available for sale	4,312		4,289
Securities available for sale (AFS), at fair value	4,470		4,387
US Government Obligations [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Securities held to maturity (HTM), at amortized cost	799		750
Estimated Fair Value, held to maturity	$ 799		$ 750
Standard Poor's, AAA Rating [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Percentage of asset backed securities in investment portfolio	99.00%		99.00%
Amount	$ 145,554		$ 138,267
Standard Poor's, BB Rating [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amount	487		518
Standard Poor's, B+ Rating [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amount	$ 541
Standard Poor's CCC + Rating [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amount			$ 575