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Other Liabilities (Tables)
6 Months Ended
Jun. 30, 2020
Other Liabilities [Abstract]  
Schedule of Long Term Liabilities

Other liabilities consists of (in thousands):

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June 30,

​

December 31,

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2020

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2019

Operating lease liability

$

—

​

$

345

Indemnification liabilities - other (see Note 13)

​

145

​

​

145

Liabilities for uncertain tax positions

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19,278

​

​

17,352

​

$

19,423

​

$

17,842