Earnings (loss) per Common Share (Details) - USD ($)	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Numerator
Net income (loss) attributable to common stockholders	$ (7,135,148)	$ 2,792,820
Denominator
Weighted average number of common shares — Basic (in shares)	32,955,656	33,126,645
Effect of dilutive securities:
Contingent restricted stock grants (in shares)	0	7,727
Weighted average number of common shares and dilutive potential common shares used in diluted earnings per share (in shares)	32,955,656	33,134,372
Net earnings (loss) per common share - Basic (in dollars per share)	$ (0.22)	$ 0.08
Net earnings (loss) per common share - Diluted (in dollars per share)	$ (0.22)	$ 0.08