Fair Value (Details 4) $ in Thousands	12 Months Ended
	Dec. 31, 2017 USD ($) Issurers_Currently_Performing	Dec. 31, 2016 USD ($) Issurers_Currently_Performing
Additional information related to the Company's trust preferred securities
Available-for-sale Securities, Amortized Cost	$ 164,683	$ 183,625
Total debt securities, Fair Value	$ 162,422	179,219
PreTSL XXIII | Moodys B2 Rating | Fitch C C C Rating
Additional information related to the Company's trust preferred securities
Class	C-2
Available-for-sale Securities, Amortized Cost	$ 758	760
Total debt securities, Fair Value	336	310
Unrealized Gain/(Loss)	$ (422)	$ (450)
Number of Issuers Currently Performing | Issurers_Currently_Performing	90	90
Deferrals and Defaults as a % of Current Collateral	20.90%	22.50%
Excess Subordination as a % of Current Performing Collateral	7.12%	5.33%
Trapeza IX | Moodys Caa2 Rating | Fitch C C Rating
Additional information related to the Company's trust preferred securities
Class	B-1
Available-for-sale Securities, Amortized Cost	$ 860
Total debt securities, Fair Value	559
Unrealized Gain/(Loss)	$ (301)
Number of Issuers Currently Performing | Issurers_Currently_Performing	30
Deferrals and Defaults as a % of Current Collateral	14.00%
Trapeza IX | Moodys Ca Rating | Fitch C C Rating
Additional information related to the Company's trust preferred securities
Class		B-1
Available-for-sale Securities, Amortized Cost		$ 860
Total debt securities, Fair Value		515
Unrealized Gain/(Loss)		$ (345)
Number of Issuers Currently Performing | Issurers_Currently_Performing		32
Deferrals and Defaults as a % of Current Collateral		13.30%
Trust preferred securities
Additional information related to the Company's trust preferred securities
Available-for-sale Securities, Amortized Cost	$ 1,618	$ 1,620
Total debt securities, Fair Value	895	825
Unrealized Gain/(Loss)	$ (723)	$ (795)