Summary of Significant Accounting Policies (Narrative) (Details)			3 Months Ended
	Mar. 28, 2017 USD ($)	Mar. 17, 2017 USD ($) shares	Mar. 31, 2018 USD ($) segment entity	Mar. 31, 2017 USD ($)	Mar. 24, 2017 shares
Summary Of Significant Accounting Policies [Line Items]
Number of subsidiaries | entity			2
Impairment			$ 0	$ 0
Federal tax rate			21.00%	34.00%
Income tax (benefit) expense			$ 165,198	$ 464,864
Employee stock ownership plan, shares | shares					350,000
Underwriting fees paid	$ 1,000,000
Net proceeds received from issuance of shares of common stock and stock-based compensation expense	$ 28,700,000		$ 96,535	$ 29,136,900
Operating segments | segment			1
Illinois [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration risk			33.30%	35.90%
Surplus Notes [Member]
Summary Of Significant Accounting Policies [Line Items]
Notes converted		$ 1,650,000
Debt converted, shares issued | shares		165,000