Current Expected Credit Losses - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Current Expected Credit Losses [Line Items]
Reduction in allowance for current expected credit losses	$ 600
Write-offs	(319)
Reversal to credit loss expense	(100)
Current period provision (reversal)	(149)	$ 6,391
Finance income related to net investment in leases with billed amounts past due		100
Finance income related to financed sale receivables with billed amounts past due	1,200	2,100
Maximum [Member]
Current Expected Credit Losses [Line Items]
Finance income related to net investment in leases with billed amounts past due	100
Theatre And Foreign Movie Studio [Member]
Current Expected Credit Losses [Line Items]
Current period provision (reversal)		6,400
Theatre Operators [Member]
Current Expected Credit Losses [Line Items]
Write-offs	(170)
Current period provision (reversal)	599	3,202
Provision for current expected credit losses	200	875
Theatre Operators [Member] | Variable Consideration Receivables [Member]
Current Expected Credit Losses [Line Items]
Provision for current expected credit losses	$ 300	$ 3,000