Condensed Consolidated Balance Sheets (unaudited) (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Allowance for accounts receivable	$ 7,770	$ 6,372
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, authorized (in shares)	250,000,000	250,000,000
Common stock, issued (in shares)	49,219,383	49,156,753
Common stock, outstanding (in shares)	49,219,383	49,156,753

Amount of allowance for credit loss on accounts receivable, classified as current.

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Face amount or stated value per share of common stock.

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