CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT) - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Total
Balance, beginning at Jun. 30, 2015	$ 111	$ 8,841	$ (51,205)	$ (42,253)
Balance, beginning (in shares) at Jun. 30, 2015	11,139,000
Increase (decrease) in stockholders' equity
Sale of common stock in IPO, net of $9,309 in underwriter discounts, commissions and offering expenses	$ 61	81,701		81,762
Sale of common stock in IPO, net of $9,309 in underwriter discounts, commissions and offering expenses (in shares)	6,071,429
Issuance of shares of common stock warrants and options	$ 9	12,653		12,662
Issuance of shares of common stock warrants and options (shares)	864,946
Repurchase and retirement of common stock	$ (4)	(4,322)		(4,326)
Repurchase and retirement of common stock (shares)	(378,417)
Equity-based compensation activity	$ 9	13,502		13,511
Equity-based compensation activity (shares)	894,850
Dividends declared			(79,945)	(79,945)
Net income			10,210	10,210
Balance, ending at Jun. 30, 2016	$ 186	112,375	(120,940)	(8,379)
Balance, ending (in shares) at Jun. 30, 2016	18,591,808
Increase (decrease) in stockholders' equity
Equity-based compensation activity		1,019		1,019
Equity-based compensation activity (shares)	45,637
Offering costs		(449)		(449)
Net income			19,570	19,570
Balance, ending at Jun. 30, 2017	$ 186	112,945	(101,370)	11,761
Balance, ending (in shares) at Jun. 30, 2017	18,637,445
Increase (decrease) in stockholders' equity
Equity-based compensation activity	$ 1	1,107		1,108
Equity-based compensation activity (shares)	44,893
Net income			39,653	39,653
Balance, ending at Jun. 30, 2018	$ 187	$ 114,052	$ (61,717)	$ 52,522
Balance, ending (in shares) at Jun. 30, 2018	18,682,338