RESTATEMENT OF CONSOLIDATED FINANCIAL STATEMENTS - Restated Condensed Consolidated Statement of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
OPERATING ACTIVITIES:
Net loss	$ (6,320)	$ (2,171)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Non-cash stock-based compensation	415	409
(Gain) loss on disposal of property and equipment	7	(18)
Non-cash interest and amortization of debt discount	22	17
Bad debt expense	509	168
Provision for inventory reserve	212	221
Depreciation and amortization	2,147	1,370
Excess tax benefits	0	67
Deferred income taxes	4	16
Recognition of deferred gain from sale-leaseback transactions		0
Changes in operating assets and liabilities:
Accounts receivable	(3,678)	(3,149)
Finance receivables, net	(63)	9,168
Inventory, net	1,707	(3,900)
Prepaid expenses and other current assets	(220)	(103)
Accounts payable and accrued expenses	(8,665)	(1,490)
Deferred revenue	(210)	171
Income taxes payable	11	(55)
Net cash (used in) provided by operating activities	(14,122)	721
INVESTING ACTIVITIES:
Purchase of property and equipment, including rentals	(693)	(720)
Proceeds from sale of property and equipment	30	45
Net cash used in investing activities	(663)	(675)
FINANCING ACTIVITIES:
Issuance of common stock in public offering, net	0	39,888
Repayment of capital lease obligations and long-term debt		(809)
Net cash (used in) provided by financing activities	(917)	39,079
Net (decrease) increase in cash and cash equivalents	(15,702)	39,125
Cash and cash equivalents at beginning of year	83,964	12,745
Cash and cash equivalents at end of period	$ 68,262	51,870
As Previously Reported
OPERATING ACTIVITIES:
Net loss		(213)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Non-cash stock-based compensation		576
(Gain) loss on disposal of property and equipment		(18)
Non-cash interest and amortization of debt discount		15
Bad debt expense		118
Provision for inventory reserve		0
Depreciation and amortization		1,492
Excess tax benefits		67
Deferred income taxes		(535)
Recognition of deferred gain from sale-leaseback transactions		(43)
Changes in operating assets and liabilities:
Accounts receivable		(3,192)
Finance receivables, net		8,771
Inventory, net		(3,648)
Prepaid expenses and other current assets		(217)
Accounts payable and accrued expenses		(2,168)
Deferred revenue		0
Income taxes payable		0
Net cash (used in) provided by operating activities		1,005
INVESTING ACTIVITIES:
Purchase of property and equipment, including rentals		(992)
Proceeds from sale of property and equipment		45
Net cash used in investing activities		(947)
FINANCING ACTIVITIES:
Issuance of common stock in public offering, net		39,888
Repayment of capital lease obligations and long-term debt		(821)
Net cash (used in) provided by financing activities		39,067
Net (decrease) increase in cash and cash equivalents		39,125
Cash and cash equivalents at beginning of year		12,745
Cash and cash equivalents at end of period		51,870
Adjustments
OPERATING ACTIVITIES:
Net loss		(1,958)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Non-cash stock-based compensation		(167)
(Gain) loss on disposal of property and equipment		0
Non-cash interest and amortization of debt discount		2
Bad debt expense		50
Provision for inventory reserve		221
Depreciation and amortization		(122)
Excess tax benefits		0
Deferred income taxes		551
Recognition of deferred gain from sale-leaseback transactions		43
Changes in operating assets and liabilities:
Accounts receivable		43
Finance receivables, net		397
Inventory, net		(252)
Prepaid expenses and other current assets		114
Accounts payable and accrued expenses		678
Deferred revenue		171
Income taxes payable		(55)
Net cash (used in) provided by operating activities		(284)
INVESTING ACTIVITIES:
Purchase of property and equipment, including rentals		272
Proceeds from sale of property and equipment		0
Net cash used in investing activities		272
FINANCING ACTIVITIES:
Issuance of common stock in public offering, net		0
Repayment of capital lease obligations and long-term debt		12
Net cash (used in) provided by financing activities		12
Net (decrease) increase in cash and cash equivalents		0
Cash and cash equivalents at beginning of year		0
Cash and cash equivalents at end of period		$ 0