Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (Parentheticals) - Common Stock [Member]	Nov. 26, 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