Long-Term Debt (Schedule of Outstanding Future Payments Associated Company's Term Loan) (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Debt Disclosure [Abstract]
2021	$ 1,501
2022	2,218
2023	10,800
2024	13,671
2025	5,153
Total payments	33,343
Less amount representing interest	(6,655)
Notes payable, gross	26,688
Less: Unamortized portion of EOT charge	(1,688)
Less: Unamortized discount on notes payable	(213)
Less: Unamortized debt issuance costs	(343)
Long-term debt	24,444
Less current portion
Long-term debt, net of current portion	$ 24,444

Amount representing interest of term loan.

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Amount, after accumulated amortization, of debt discount.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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