Leases - ROU Assets and Lease Liabilities (Details) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019	Jan. 01, 2019
Consolidated statements of condition classification of the Company's ROU assets and lease liabilities
Practical expedients package		true
Practical expedients, use of hindsight		true
Operating lease ROU assets	$ 487,000	$ 487,000	$ 556,000
Operating lease ROU assets, statement of financial position	us-gaap:OtherAssets	us-gaap:OtherAssets
Operating lease liabilities	$ 491,000	$ 491,000	$ 556,000
Operating lease liabilities, statement of financial position	us-gaap:OtherLiabilities	us-gaap:OtherLiabilities
Options to renew		true
Weighted-average remaining operating lease term	7 years 3 months 18 days	7 years 3 months 18 days
Weighted-average discount rate	5.20%	5.20%
Total operating cost	$ 30,000	$ 90,000
Total operating lease payment to related parties	$ 5,000	$ 18,000