Earnings (Loss) Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Numerator:
Net income (loss)	$ (16,592)	$ 10,645	$ (23,665)	$ (264,521)
Adjusted “if-converted” net income (loss)	$ (16,592)	$ 10,645	$ (23,665)	$ (264,521)
Denominator:
Basic weighted average common shares outstanding	38,707,049	37,842,224	38,539,850	37,729,099
Effect of potentially dilutive options and restricted stock awards		1,488,623
Diluted weighted average common shares outstanding	38,707,049	39,330,847	38,539,850	37,729,099
Earnings (loss) per common share:
Basic (in dollars per share)	$ (0.43)	$ 0.28	$ (0.61)	$ (7.01)
Diluted (in dollars per share)	$ (0.43)	$ 0.27	$ (0.61)	$ (7.01)
Anti-dilutive shares excluded in the computation of diluted earnings per share	7,800,000	481,000	6,000,000	2,000,000