Subsequent Event (Details) - USD ($) $ in Thousands		6 Months Ended
Feb. 05, 2020	Jan. 31, 2020
Investor [Member]
Common stock shares		214,844
Net proceeds amount		$ 275
Subsequent Event [Member]
Common stock shares	1,734,459
Net proceeds amount	$ 2,160

Number of shares of stock issued as of the balance sheet date, including shares that had been issued and were previously outstanding but which are now held in the treasury.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644

Name:	us-gaap_SharesIssued
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant