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Stockholders' Equity - Common Stock Dividends and Buyback Program (Details) - USD ($)	7 Months Ended	9 Months Ended		40 Months Ended
	Dec. 31, 2015	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	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		$ 9,953,562	$ 8,286,486
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	$ 1,609,008	$ 138,638	$ 395,550
Number of treasury shares acquired	265,762	15,489	55,018	0
Average cost per share (in dollars per share)	$ 6.05	$ 8.95	$ 7.19

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

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