Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Allowance for doubtful accounts related to receivables	$ 288	$ 382
Preferred shares, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred shares, shares authorized (in shares)	100,000,000	100,000,000
Preferred shares, shares issued (in shares)	4,800,000	4,800,000
Preferred shares, shares outstanding (in shares)	4,800,000	4,800,000
Common shares, par value (in dollars per share)	$ 0.01	$ 0.01
Common shares, shares authorized (in shares)	500,000,000	500,000,000
Common shares, shares issued (in shares)	48,804,585	48,768,890
Common shares, shares outstanding (in shares)	48,804,585	48,768,890

The valuation allowance as of the balance sheet date to reduce the gross amount of receivables to estimated net realizable value, which would be presented in parentheses on the face of the balance sheet.

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