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Stockholders' Equity - Common Stock Dividends and Buyback Program (Details) - USD ($)	6 Months Ended		7 Months Ended	37 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2015	Dec. 31, 2018	May 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock outstanding	33,186,665			33,186,665
Cash dividends to common stockholders	$ 6,634,896	$ 4,969,335
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	$ 138,638	$ 395,550	$ 1,609,008
Number of treasury shares acquired	15,489	55,018	265,762	0
Average cost per share (in dollars per share)	$ 8.95	$ 7.19	$ 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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