v3.26.1
Derivative Financial Instruments - Schedule of Amounts in Condensed Consolidated Statement of Operations, Including Impacts to Accumulated Other Comprehensive Income (AOCI) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Derivative [Line Items]        
Amount of Gain or (Loss) Recognized in Other Comprehensive Income (Loss) on Derivatives $ 134 $ (8,170) $ 4,439 $ (15,939)
Amount of Gain or (Loss) to Earnings from AOCI Reclassifications 4,200 (3,378) 4,636 (2,311)
Interest rate swaps        
Derivative [Line Items]        
Amount of Gain or (Loss) Recognized in Other Comprehensive Income (Loss) on Derivatives 134 (1,306) 4,439 (7,827)
Interest rate swaps | Income Statement Location [Axis]: us-gaap:InterestExpenseNonoperating        
Derivative [Line Items]        
Amount of Gain or (Loss) to Earnings from AOCI Reclassifications 285 1,653 675 3,452
Interest rate swaps | Income Statement Location [Axis]: us-gaap:OtherNonoperatingIncomeExpense        
Derivative [Line Items]        
Amount of Gain or (Loss) to Earnings from AOCI Reclassifications 3,869 0 3,869 0
Treasury locks        
Derivative [Line Items]        
Amount of Gain or (Loss) Recognized in Other Comprehensive Income (Loss) on Derivatives 0 0 0 1,292
Treasury locks | Income Statement Location [Axis]: us-gaap:InterestExpenseNonoperating        
Derivative [Line Items]        
Amount of Gain or (Loss) to Earnings from AOCI Reclassifications 46 45 92 45
Foreign currency exchange forwards        
Derivative [Line Items]        
Amount of Gain or (Loss) Recognized in Other Comprehensive Income (Loss) on Derivatives 0 (1,598) 0 (1,598)
Cross-currency swap        
Derivative [Line Items]        
Amount of Gain or (Loss) Recognized in Other Comprehensive Income (Loss) on Derivatives 0 (5,266) 0 (7,806)
Cross-currency swap | Income Statement Location [Axis]: us-gaap:InterestExpenseNonoperating        
Derivative [Line Items]        
Amount of Gain or (Loss) to Earnings from AOCI Reclassifications 0 50 0 213
Cross-currency swap | Income Statement Location [Axis]: art:BusinessCombinationAcquisitionRelatedExpensesLitigationsExpenseAndOther        
Derivative [Line Items]        
Amount of Gain or (Loss) to Earnings from AOCI Reclassifications $ 0 $ (5,126) $ 0 $ (6,021)