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Stockholders' Equity - Common Stock Dividends and Buyback Program (Details) - USD ($)	3 Months Ended		7 Months Ended	34 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2015	Sep. 30, 2018	May 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock outstanding	33,157,852			33,157,852
Cash dividends to common stockholders	$ 3,315,785	$ 2,481,471
Common Stock | 2015 Share Repurchase Program
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized amount to be repurchased					$ 5,000,000
Value of shares repurchased	$ 89,992	$ 110,753	$ 1,609,008
Number of treasury shares acquired	9,087	15,284	265,762	0
Average cost per share (in dollars per share)	$ 9.90	$ 7.25	$ 6.05

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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