Fair Value Measurements (Details 4) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Financial Assets:
Impaired loans	$ 1,013	$ 1,900
Fair Value, Inputs, Level 3 [Member]
Financial Assets:
Impaired loans	1,013	1,900
Tribute Warrant [Member]
Financial Assets:
Impaired loans	1,013	1,900	$ 679
Tribute Warrant [Member] | Fair Value, Inputs, Level 3 [Member]
Financial Assets:
Impaired loans	3,338	12,500
Marketable Securities [Member] | Tribute Warrant [Member]
Financial Assets:
Impaired loans	$ 3,338	$ 12,500