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Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (Parentheticals) - Common Stock [Member]	Aug. 27, 2017 $ / shares
Minimum [Member]
Issuance of common stock, per share (in dollars per share)	$ 5.63
Maximum [Member]
Issuance of common stock, per share (in dollars per share)	$ 6.66

X

- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: