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Fair-Value Measurements (Tables)
12 Months Ended
Dec. 31, 2021
Fair Value Disclosures [Abstract]  
Schedule of Fair Value of Financial Assets and Liabilities The following table presents the fair-value hierarchy for our Level 1 and Level 2 financial and non-financial assets and liabilities, which are measured at fair value on a recurring basis:
December 31, 2021December 31, 2020
(in thousands)
Quoted prices in active markets
(Level 1)
Significant other observable inputs
(Level 2)
Quoted prices in active markets
(Level 1)
Significant other observable inputs
(Level 2)
Fair Value
Assets:
Cash equivalents$20,665 $— $17,508 $— 
Other Assets:
Common stock of unaffiliated foreign public company (a)
702 — 748 — 
Interest rate swaps— 3,328 — — 
Liabilities:
Other noncurrent liabilities:
Interest rate swaps— (5,176)— (12,714)
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(a)Original cost basis $0.5 million