Fair Value Measurements - Assets and Liabilities Carried at Fair Value Measured on Recurring Basis (Details) - Fair Value, Measurements, Recurring	Jun. 30, 2017 USD ($)
Assets
Total assets at fair value	$ 1,381,361
Investments in securities
Assets
Total assets at fair value	1,381,361
Level 1
Assets
Total assets at fair value	1,381,361
Level 1 \| Investments in securities
Assets
Total assets at fair value	$ 1,381,361

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

Name:	us-gaap_AssetsFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant