Quarterly report pursuant to Section 13 or 15(d)

CONSOLIDATED BALANCE SHEETS (Parenthetical)

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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
CONSOLIDATED BALANCE SHEETS    
Allowance for doubtful accounts $ 7,171 $ 6,926
Preferred stock, par value (in dollars per share) $ 0.01 $ 0.01
Preferred stock, shares authorized 10,000,000 10,000,000
Preferred stock, shares, issued 0 0
Preferred stock, shares, outstanding 0 0
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized 250,000,000 250,000,000
Common stock, shares issued 39,121,670 39,029,913
Common stock, shares outstanding 33,061,398 33,018,925
Treasury stock, shares at cost 6,060,272 6,010,988