Regulatory Capital Matters (Narrative) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Jan. 01, 2016	Dec. 31, 2015
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Percent of Qualified Thrift Lender test requires	65.00%
Common equity tier 1 capital to risk-weighted assets, ratio	4.50%
Capital conservation buffer	2.50%	0.625%
Common Equity Tier 1 capital to risk weighted assets, upon full implementation, ratio	7.00%
Tier 1 capital to risk-weighted assets, ratio	6.00%
Tier 1 capital to risk weighted assets, upon full implementation, ratio	8.50%
Total capital to risk-weighted assets, ratio	8.00%
Total capital to risk weighted assets, upon full implementation, ratio	10.50%
Minimum leverage ratio	4.00%
Capital conservative buffer phase period	4 years
Tier 1 (Core) Capital	5.00%		5.00%
Total capital to risk weighted assets	10.00%		10.00%
Opening Balance in Liquidation Account	$ 14,300
Future percent, common equity of risk-weighted assets	2.50%
CF Bank [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 (Core) Capital	8.00%		8.00%
Total capital to risk weighted assets	12.00%		12.00%