2. Investment Securities (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Jun. 30, 2017	Dec. 31, 2016
Securities available for sale
Cost	$ 24,702	$ 24,774
Unrealized Gains	7	9
Unrealized Losses	1	0
Market Value	24,708	24,783
U. S. Treasuries [Member]
Securities available for sale
Cost	24,001	24,005
Unrealized Gains	0	9
Unrealized Losses	1	0
Market Value	24,000	24,014
Securities held to maturity
Cost	125	125
Market Value	125	125
Government sponsored Enterprises [Member]
Securities available for sale
Cost	0
Unrealized Gains	0
Unrealized Losses	0
Market Value	0
Mortgage-backed securities [Member]
Securities available for sale
Cost	566	634
Unrealized Gains	7	0
Unrealized Losses	0	0
Market Value	573	634
Marketable Equities [Member]
Securities available for sale
Cost	135	135
Unrealized Gains	0	0
Unrealized Losses	0	0
Market Value	$ 135	135
U. S. Treasury and agency obligations [Member]
Securities available for sale
Unrealized Gains		0
Unrealized Losses		0
Securities held to maturity
Cost		125
Market Value		$ 125

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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