Mortgage Backed Securities (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Mortgage Backed Securities
Weighted Average Interest Rate	5.00%	5.70%
Principal Balance	$ 60,460	$ 43,780
Amortized Cost	43,050	32,681
Fair Value	$ 43,877	$ 32,391
Mortgage Backed Securities Weighted Average Interest Rate
After five years through ten years (as percent)	9.50%	8.90%
After ten years (as percent)	3.80%	4.20%
Mortgage Backed Securities Principal Balance
After five years through ten years	$ 12,160	$ 13,616
After ten years	48,300	30,164
Mortgage Backed Securities Amortized Cost
After five years through ten years	11,212	12,579
After ten years	31,838	20,102
Mortgage Backed Securities Estimated Fair Value
After five years through ten years	11,670	12,709
After ten years	$ 32,207	$ 19,682
MBS
Mortgage Backed Securities
Weighted Average Interest Rate	5.00%	5.70%
Principal Balance	$ 60,460	$ 43,780
Amortized Cost	43,050	32,681
Fair Value	43,877	32,391
Gross Unrealized Gains	2,212	1,605
Gross Unrealized Losses	$ (1,385)	$ (1,895)
Commercial Loans
Mortgage Backed Securities
Weighted Average Interest Rate	5.00%	5.60%
Principal Balance	$ 60,322	$ 41,246
Amortized Cost	42,913	30,148
Fair Value	43,741	29,883
Gross Unrealized Gains	2,212	1,605
Gross Unrealized Losses	$ (1,384)	$ (1,870)
Tax Liens
Mortgage Backed Securities
Weighted Average Interest Rate	6.00%	6.50%
Principal Balance	$ 138	$ 2,534
Amortized Cost	137	2,533
Fair Value	136	2,508
Gross Unrealized Losses	$ (1)	$ (25)