Debt (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	9 Months Ended
May 31, 2020	Sep. 30, 2021	Sep. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Principal amount of outstanding debt		$ 13,500	$ 13,500	$ 20,000
Gain on extinguishment of debt	$ 6,200	$ 6,197	$ 6,197
Paycheck Protection Program [Member] \| Promissory notes with Bank of America [Member] \| COVID 19 [Member]
Debt Instrument [Line Items]
Aggregate loan proceeds	$ 6,200

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Cash received from principal payments made on loans related to operating activities.

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