Significant Accounting Policies deferred revenue (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Jun. 30, 2019
Revenue Recognition and Deferred Revenue [Abstract]
Deferred Revenue	$ 494	$ 516	$ 494	$ 543	$ 572	$ 636	$ 427
Deferred Revenue, Additions	149	147	677	834
Deferred Revenue, Revenue Recognized	$ 227	$ 240	$ 699	$ 718

Amount of deferred revenue recognized for transactions arising during the current reporting period. Deferred revenue is a liability as of the balance sheet date related to a revenue producing activity for which revenue has not yet been recognized. Generally, an Entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

No definition available.

Name:	us-gaap_DeferredRevenueAdditions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration