Marketable Securities and Investments - Additional Information (Details) - USD ($)	3 Months Ended
Sep. 30, 2015	Sep. 30, 2014
Investments Debt And Equity Securities [Abstract]
Unrealized loss on marketable securities	$ 13,879
Unrealized gain on marketable securities		$ 123,665

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