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Financial Instruments - Schedule of Maintenance Fee Payment to CCKF (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Sep. 30, 2019	Sep. 30, 2020		Sep. 30, 2019
Related Party Transactions [Abstract]
Maintenance Fee Payments	$ 1,400	$ 338	$ 1,443	[1]	$ 1,045
[1] During the first quarter of 2020, the Company prepaid approximately $1.4 million of maintenance payments, of which approximately $0.4 million and $1.2 million was recognized as expense for the quarter and year to date ended September 30, 2020, respectively.

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- Definition

Purchases during the period (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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Balance Type:	debit
Period Type:	duration

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No definition available.

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Balance Type:	na
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