Consolidated Balance Sheets (Parentheticals) - $ / shares	Mar. 31, 2020	Dec. 31, 2019
Common Stock
Common Stock, Par Value (in usd per share)	$ 0.01	$ 0.01
Common Stock, Shares Authorized (in shares)	500,000,000	500,000,000
Common Stock, Issued (in shares)	187,035,851	186,642,962
Common Stock, Outstanding (in shares)	187,035,851	186,642,962
Preferred Stock
Preferred Stock, Authorized (in shares)	15,000,000	15,000,000
Preferred Stock, Issued (in shares)	0	0
Preferred Stock, Outstanding (in shares)	0	0

Face amount or stated value per share of common stock.

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