Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
CURRENT ASSETS:
Allowance for uncollectible accounts	$ 5,113	$ 4,600
CAPITALIZATION:
Common stock, par value (usd per share)	$ 0.001	$ 0.001
Common stock, shares authorized (shares)	70,000,000	70,000,000
Common stock, shares issued (shares)	30,237,145	30,181,348
Common stock, shares outstanding (shares)	30,237,145	30,181,348

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

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