Subsequent Event (Details Narrative) - Subsequent Event [Member] - Warren F. Kruger, President and CEO, and Robert B. Rosene, Jr., Member of Greystone's Board [Member]	Sep. 02, 2016 USD ($) $ / shares shares
Issuance of warrants to purchase shares of common stock \| shares	250,000
Common stock price per share \| $ / shares	$ 0.01
Warrants vesting period	2 years
Warrants expiration date	Aug. 31, 2026
Capitalized debt issue cost \| $	$ 125,000

Amount, after accumulated amortization, of debt issuance costs classified as noncurrent. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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