v3.20.4

Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Supplemental disclosures:
Cash paid for income taxes, net of refunds	$ 69	$ 40	$ 26
Cash paid for interest	59,850	60,057	60,168
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	4,117	4,019
Operating cash flows from finance leases	6	20
Financing cash flows from finance leases	100	321
Non-cash investing and financing activities:
Change in capital expenditures included in accounts payable	$ (2,167)	$ 1,618	$ (1,031)

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Amount of interest paid on finance lease liability.

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Amount of cash outflow for principal payment on finance lease.

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

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