Amount of investment in marketable security.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.4)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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

Significant Accounting Policies - Schedule of Marketable Securities (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Level 1 [Member]
Marketable securities
Level 2 [Member]
Marketable securities	5,272,998	5,011,607
Level 3 [Member]
Marketable securities