INCOME TAXES - Summary of Reconciliation of the Benefit (Provision) for Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended							6 Months Ended		9 Months Ended		12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2017	Dec. 31, 2016	Mar. 31, 2018	Mar. 31, 2017	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Indicated (provision) benefit at federal statutory rate												$ 6,671	$ 3,131	$ 2,506
Stock compensation												(140)	(46)	0
Warrants												0	0	(507)
Acquisition related costs												0	(759)	0
Other permanent differences												(76)	(157)	(137)
State income taxes, net of federal benefit												663	448	174
Income tax credits												0	0	60
Changes related to prior years												0	(7)	8
Changes in valuation allowances												(7,319)	(2,544)	(2,199)
Other												(61)	35	0
(Provision) benefit for income taxes	$ (20)	$ 157	$ (28)	$ (26)	$ (23)	$ (23)	$ (23)	$ 129	$ (46)	$ 109	$ (69)	$ (262)	$ 101	$ (95)