Significant Accounting Policies (Tables)

12 Months Ended

Jun. 30, 2020

Accounting Policies [Abstract]

Marketable Securities by Major Security Type

The table below presents information regarding our marketable securities by major security type as of June 30, 2020 and 2019.

	June 30, 2020						June 30, 2019
	Held to Maturity		Available for Sale		Total		Held to Maturity		Available for Sale		Total
	(in thousands)
Marketable securities:
Corporate and other debt securities	$	61	$	10,148	$	10,209	$	62	$	7,479	$	7,541
Total marketable securities	$	61	$	10,148	$	10,209	$	62	$	7,479	$	7,541

Summary of Available for Sale Investments In Unrealized Loss Position

The following table presents the aggregate fair values and gross unrealized losses for those available for sale investments that were in an unrealized loss position as of June 30, 2020 and June 30, 2019, respectively, aggregated by investment category and the length of time that individual securities have been in a continuous loss position:

	At June 30, 2020				At June 30, 2019
	Less than 12 Months
	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
	(in thousands)
Government—U.S.	2,012		(1)		800		(1)
Total	$	2,012	$	(1)	$	800	$	(1)

Depreciation Recorded Over Estimated Useful Lives of Assets

Property and equipment are stated at cost, net of depreciation. Depreciation is recorded on a straight-line basis over the estimated useful lives of the assets as follows:

Property, equipment, furniture, fixtures and vehicles	3-7 years
Technical equipment	3-5 years
Building (Theale, Reading, England)	40 years
Leasehold improvements	Lower of estimated life or remaining lease term