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Impact Of COVID-19 Pandemic And The Writers And Actors Strikes On Operations And Liquidity (Details) - USD ($)
6 Months Ended 9 Months Ended
Dec. 31, 2022
Jun. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Impact Of Covid [Line Items]        
Debt, Current     $ 58,600,000  
Cash and cash equivalents $ 29,947,000   11,925,000 $ 39,628,000
Working capital     (85,700,000)  
Impairment charges against sites $ 0 $ 1,500,000 0 $ 1,549,000
Goodwill impairment     0  
Westpac Bank Corporate Credit Facility [Member]        
Impact Of Covid [Line Items]        
Debt, Current     8,300,000  
Santander Bank [Member]        
Impact Of Covid [Line Items]        
Debt, Current     $ 8,000,000.0