5. Fair Value Measurements (Details)	Mar. 31, 2018 USD ($)
Total	$ 346,202
Level 1 [Member]
Total	0
Level 2 [Member]
Total	346,202
Level 3 [Member]
Total	0
Municipal obligations
Total	115,543
Municipal obligations \| Level 1 [Member]
Total	0
Municipal obligations \| Level 2 [Member]
Total	115,543
Municipal obligations \| Level 3 [Member]
Total	0
Corporate obligations
Total	230,659
Corporate obligations \| Level 1 [Member]
Total	0
Corporate obligations \| Level 2 [Member]
Total	230,659
Corporate obligations \| Level 3 [Member]
Total	$ 0

This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a recurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

No definition available.

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