Supplemental cash flow (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 14, 2022
Supplemental operating cash flow information
Cash paid for interest	$ 61	$ 73
Income tax payments, net of (refunds)	(8)	1
Supplemental non-cash investing and financing activities:
Accrued capital expenditures	17	$ 12
Portion of Term Loan B accounted for as a debt modification	$ 103
9.75% 2023 Notes
Supplemental operating cash flow information
Interest rate (as a percent)	9.75%		9.75%

The amount of debt modified.

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- Definition

Future cash outflow to pay for purchases of fixed assets that have occurred.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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- Definition

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 paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

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