Summary of Significant Accounting Policies (Narrative) (Details)			3 Months Ended		6 Months Ended
	Mar. 28, 2017 USD ($)	Mar. 17, 2017 USD ($) shares	Jun. 30, 2017 entity shares	Jun. 30, 2016	Jun. 30, 2017 USD ($) entity shares	Jun. 30, 2016	Mar. 24, 2017 shares	Dec. 31, 2016 shares
Summary Of Significant Accounting Policies [Line Items]
Employee stock ownership plan, shares | shares			348,054		348,054		350,000	0
Underwriting fees paid	$ 1,000,000
Net proceeds received from issuance of shares of common stock and ESOP expense					$ 29,253,588
Federal tax rate			34.00%	34.00%	34.00%	34.00%
Illinois [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration risk			36.50%	39.30%	36.20%	39.30%
Illinois Casualty Company [Member]
Summary Of Significant Accounting Policies [Line Items]
Number of subsidiaries | entity			3		3
Surplus Notes [Member]
Summary Of Significant Accounting Policies [Line Items]
Notes converted		$ 1,650,000
Debt converted, shares issued | shares		165,000