Business Segment, Geographic and Major Customer Information - Major Customers (Details) - Customer Concentration Risk - Sales	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Customer A
Segment Reporting Information [Line Items]
Percentage of revenue by major customers	39.90%
Customer B
Segment Reporting Information [Line Items]
Percentage of revenue by major customers	17.90%	19.00%
Customer D
Segment Reporting Information [Line Items]
Percentage of revenue by major customers		12.60%

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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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