Supplemental Financial Information (Interest Expense) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Supplemental Income Statement Elements [Abstract]
Interest on revolving credit facility	$ 839	$ 101
Line of credit fees	138	273
Debt issuance amortization costs	179	179
Interest income	(108)	(195)
Other	21	249
Total interest expense, net	$ 1,069	$ 607

Amount of amortization expense attributable to debt issuance costs.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Aggregate amount of interest paid or due on all long-term debt.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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-SubTopic 220
-Section S99
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Amount of interest expense classified as other.

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The net amount of operating interest income (expense).

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Amount of interest income earned from interest bearing assets classified as other.

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Amount of the fee for available but unused credit capacity under the credit facility.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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