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Summary of Significant Accounting Policies (Tables)
9 Months Ended
Sep. 30, 2020
Summary of Significant Accounting Policies  
Schedule of allowances for credit losses, trade accounts receivable and other receivables

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​

​

​

​

​

    

September 30, 

​

​

2020

​

​

​

(in thousands)

Beginning balance

​

$

2,919

Cumulative-effect adjustment upon adoption of ASU 2016-13

​

​

404

Provision for credit losses

​

​

1,445

Write-offs

​

​

(457)

Total

​

$

4,311

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​

​

​

Schedule of Accumulated Other Comprehensive Income (Loss)

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​

​

​

​

​

​

​

​

​

​

​

​

​

Three months ended

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Nine months ended

​

September 30, 

​

September 30, 

​

2020

​

2019

​

2020

​

2019

​

(in thousands)

​

(in thousands)

Beginning balance

$

5,770

​

$

795

​

$

919

​

$

(552)

Net unrealized gain (loss) on available-for-sale securities, net of tax

​

(600)

​

​

63

​

​

4,251

​

​

1,410

Ending balance

$

5,170

​

$

858

​

$

5,170

​

$

858