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Stockholders' Equity (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended
Jun. 12, 2019
Jun. 10, 2019
Jun. 30, 2019
Class of Stock [Line Items]      
Net proceeds from stock offering     $ 195.3
Underwriting discounts, commissions and offering costs     $ 8.2
Public Stock Offering      
Class of Stock [Line Items]      
Issuance of common stock from registered public offering (in shares) 395,698 2,637,986  
Issuance of common stock from registered public offering (in usd per share) $ 69.50 $ 69.50  
Public Stock Offering - Shares From Parent      
Class of Stock [Line Items]      
Issuance of common stock from registered public offering (in shares) 2,913,684    
Public Stock Offering - Shares From Existing Shareholders      
Class of Stock [Line Items]      
Issuance of common stock from registered public offering (in shares) 120,000