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Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Current assets:
Allowance for uncollectible accounts	$ 5,753	$ 4,600
Capitalization:
Common stock, par value (usd per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	70,000,000	70,000,000
Common stock, shares issued (in shares)	30,801,912	30,181,348
Common stock, shares outstanding (in shares)	30,801,912	30,181,348

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