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Marketable Securities (Summary of Investment Securities in an Unrealized Loss Position) (Details) $ in Thousands	Dec. 31, 2021 USD ($)
Investments, Debt and Equity Securities [Abstract]
Unrealized Losses, Less than 12 months	$ (531)
Unrealized Losses, 12 months or more	0
Unrealized Losses, Total	(531)
Fair value, Less than 12 months	25,814
Fair value, 12 months or more	0
Fair value, Total	25,814
Unrealized Gains, Less than 12 months	0
Unrealized Gains, 12 months or more	53
Unrealized Gains, Total	53
Fair value, Less than 12 months	0
Fair value, 12 months or more	5,974
Fair value, Total	$ 5,974

X

- Definition

Represents the debt securities, held to maturity, continuous unrealized gains position, less than one two months, accumulated gains.

+ References

No definition available.

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- Definition

Represents the debt securities, held to maturity, continuous unrealized gains position, less than one two months, fair value.

+ References

No definition available.

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- Definition

Represents the debt securities, held to maturity, continuous unrealized gains position, one two months or longer, accumulated gains.

+ References

No definition available.

+ Details

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- Definition

Represents the debt securities, held to maturity, continuous unrealized gains position, one two months or longer, fair value.

+ References

No definition available.

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- Definition

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+ References

No definition available.

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- Definition

Represents the debt securities, held to maturity, unrealized gains position, fair value.

+ References

No definition available.

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- Definition

Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity), in continuous loss position for 12 months or longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27337-111563

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27290-111563

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- Definition

Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity), in unrealized loss position.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
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-URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27290-111563

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- Definition

Fair value of investment in debt security measured at amortized cost (held-to-maturity), in unrealized loss position.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
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-URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27290-111563

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Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity), in continuous loss position for less than 12 months.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
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-URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27337-111563

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- Definition

Fair value of investment in debt security measured at amortized cost (held-to-maturity), in continuous unrealized loss position for less than 12 months.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27337-111563

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- Definition

Fair value of investment in debt security measured at amortized cost (held-to-maturity), in continuous unrealized loss position for 12 months or longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27337-111563

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