XML 33 R22.htm IDEA: XBRL DOCUMENT v3.5.0.2
Nature of Operations (Details) - USD ($)
$ / shares in Units, $ in Millions
Oct. 06, 2015
Jun. 30, 2016
Dec. 31, 2015
Completion of IPO [Abstract]      
Sales price per share (in dollars per share) $ 11.00    
Gross proceeds from issuance of common stock $ 92.5    
Net proceeds from issuance of common stock 82.8    
Underwriting discounts, commissions and other offering costs $ 9.7    
Common shares issued upon conversion of preferred stock (in shares) 18,566,856    
Preferred stock, shares outstanding (in shares) 0    
Common stock, shares authorized (in shares) 75,000,000 75,000,000 75,000,000
Preferred stock, shares authorized (in shares) 5,000,000    
Common stock, par value (in dollars per share) $ 0.00033 $ 0.00033 $ 0.00033
IPO [Member]      
Completion of IPO [Abstract]      
Shares of common stock sold (in shares) 8,412,423    
Over-Allotment Option [Member]      
Completion of IPO [Abstract]      
Shares of common stock sold (in shares) 1,097,272