Investments - Additional Information (Details)	3 Months Ended
Sep. 30, 2019 USD ($)
Investments.
Unrealized Gain on Securities	$ 469,000
Debt and Equity Securities, Realized Gain (Loss)	$ 1,076,000

The increase (decrease), resulting in a gain, in the difference between the fair value and the carrying value, or in the comparative fair values, of securities held at each balance sheet date, that was included in earnings for the period.

No definition available.

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