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Equity - June 2020 Sobi Stock Purchase (Narrative) (Details) - SOBI Purchase Agreement - USD ($) $ / shares in Units, $ in Millions	Jul. 28, 2020	Jun. 11, 2020
Class of Stock [Line Items]
Sale of stock, number of shares issued in transaction (in shares)		180,546
Share price (in dollars per share)		$ 138.4680
Sale of stock, percentage of ten-day volume weighted average price of common stock		120.00%
Total aggregate purchase price		$ 25.0
Redemption premium	$ 14.5

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