Shareholders' Equity - Share Lending Agreement (Details)	1 Months Ended
	Jul. 31, 2018 $ / shares shares
Equity [Abstract]
Borrowed shares, number issued (in shares) | shares	7,479,431
Share lending agreement, length of time for shares to be returned upon termination	5 days
Borrowed shares, public offering price per share (in usd per share) | $ / shares	$ 13.37