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.

No definition available.

+ Details

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13531-108611

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13537-108611

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

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- Definition

Amount of expense (reversal of expense) for expected credit loss on accounts receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(5))
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

Concentration Risk, Number of Entities Included In Calculation

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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- Details

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Significant Accounting Policies (Concentration of Credit Risk, Accounts Receivable, and Allowance for Doubtful Accounts) (Narrative) (Details)	12 Months Ended
	Dec. 31, 2019 USD ($) customer	Dec. 31, 2018 USD ($) customer	Dec. 31, 2017 USD ($) customer
Concentration Risk [Line Items]
Bad debt expense \| $	$ 0	$ 0	$ 200,000
Customer One [Member]
Concentration Risk [Line Items]
Concentration risk, number of customer	1	1	1
Customer Second [Member]
Concentration Risk [Line Items]
Concentration risk, number of customer	1
Sales Revenue, Net [Member] \| Customer One [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	27.00%	18.00%	17.00%
Sales Revenue, Net [Member] \| Customer Second [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	11.00%
Sales Revenue, Net [Member] \| Geographic Concentration Risk [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	7.00%	8.00%	9.00%
Accounts Receivable [Member] \| Customer One [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	9.00%	6.00%	3.00%
Accounts Receivable [Member] \| Customer Second [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	17.00%