Warrants (Narrative) (Details) - $ / shares	3 Months Ended
	Mar. 31, 2017	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Mar. 31, 2016
Warrants and Rights Note Disclosure [Abstract]
Warrants granted, exercise price per share		$ 20.00	$ 20.00	$ 20.00	$ 20.00
Warrants settled or exercised	250,750