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Valuation And Qualifying Accounts (Tables)
12 Months Ended
Dec. 31, 2021
Valuation And Qualifying Accounts  
Schedule of allowance for doubtful accounts and valuation allowance

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Balance at

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​

​

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beginning of

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Charged to

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Charges utilized/

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Balance at

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period

    

expenses

    

Write-offs

    

end of period

Allowance for doubtful accounts:

 

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​

  

 

​

  

 

​

  

Year ended December 31, 2020

​

$

1,114

​

$

424

 

​

—

​

$

1,538

Year ended December 31, 2021

​

$

1,538

​

​

—

 

$

21

​

$

1,517

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​

​

​

​

​

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​

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​

​

​

​

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Balance at

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Addition

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Charged

​

​

​

    

beginning of

    

from

    

(credited) to

    

Balance at

​

​

period

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acquisition

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expenses

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end of period

Valuation allowance on deferred tax assets:

 

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​

  

 

​

  

 

​

  

Year ended December 31, 2020

​

$

(2,156)

 

$

(9,401)

​

$

(721)

​

$

(12,278)

Year ended December 31, 2021

​

$

(12,278)

​

​

—

​

$

(2,158)

​

$

(14,436)