Consolidated Balance Sheets (Parentheticals) - $ / shares	Dec. 31, 2017	Dec. 31, 2016
Preferred stock, authorized (in shares)	100,000	100,000
Preferred stock, issued (in shares)	0	0
Preferred stock, oustanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	112,500,000	112,500,000
Common stock, issued (in shares)	17,277,299	2,230,452
Common stock, outstanding (in shares)	17,276,965	2,230,118
Treasury stock (in shares)	334	334