Loans - Past Due Loans And Nonaccrual Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	$ 7,285	$ 4,836
Nonaccrual loans	3,196	3,686
Total current, subtotal	967,483	980,563
Total financing receivables	974,768	985,399
Less: unearned origination fee, net of origination costs	(4,251)	(4,612)
Total loans	970,517	980,787
Asset Quality Rating - Pass
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	1,112	601
Nonaccrual loans	0	0
Total current, subtotal	932,261	951,300
Total financing receivables	933,373	951,901
Asset Quality Rating - Special Mention
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	128	312
Nonaccrual loans	0	0
Total current, subtotal	966	496
Total financing receivables	1,094	808
Asset Quality Rating - Substandard
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	6,045	3,923
Nonaccrual loans	3,196	3,686
Total current, subtotal	34,256	28,767
Total financing receivables	40,301	32,690
30-59 Days Past Due Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	4,042	1,129
30-59 Days Past Due Still Accruing | Asset Quality Rating - Pass
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	1,112	601
30-59 Days Past Due Still Accruing | Asset Quality Rating - Special Mention
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	128	312
30-59 Days Past Due Still Accruing | Asset Quality Rating - Substandard
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	2,802	216
60-89 Days Past Due Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	0	21
60-89 Days Past Due Still Accruing | Asset Quality Rating - Pass
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	0	0
60-89 Days Past Due Still Accruing | Asset Quality Rating - Special Mention
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	0	0
60-89 Days Past Due Still Accruing | Asset Quality Rating - Substandard
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	0	21
Greater Than 90 Days Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	47	0
Greater Than 90 Days Still Accruing | Asset Quality Rating - Pass
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	0	0
Greater Than 90 Days Still Accruing | Asset Quality Rating - Special Mention
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	0	0
Greater Than 90 Days Still Accruing | Asset Quality Rating - Substandard
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	$ 47	$ 0