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Summary of Significant Accounting Policies (Narrative) (Details) - ASC 606 [Member] $ in Millions | 3 Months Ended | 6 Months Ended
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Jun. 30, 2022 USD ($) | Jun. 30, 2022 USD ($) Segment
Summary Of Significant Accounting Policies [Line Items] |  |
Number of reporting segment | Segment |  | 2
Deferred revenue | $ | $ 0.5 | $ 0.5
Maximum [Member] |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Percentage of service revenue that is recognized over a period of time against total revenue | 1.00% |

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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=126919976&loc=SL49130531-203044 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130549-203045 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126919976&loc=SL49130532-203044 + Details
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