Number of share options (or share units) exercised during the current period.

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Name:	us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Subsequent Event (Details) - Common Stock [Member] - shares	1 Months Ended	3 Months Ended
	Oct. 31, 2020	Jun. 30, 2019	Mar. 31, 2019
Subsequent Event [Abstract]
Shares issued as a result of exercise of options (in shares)		7,586	28,824
Subsequent Event [Member]
Subsequent Event [Abstract]
Shares issued as a result of exercise of options (in shares)	15,000