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Organization and Summary of Significant Accounting Policies (Investments in Unconsolidated Joint Ventures) (Details) | 12 Months Ended
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Dec. 31, 2018
Schedule of Equity Method Investments [Line Items] |
Document Fiscal Year Focus | 2018
Rogers INOAC Corporation (RIC) |
Schedule of Equity Method Investments [Line Items] |
Joint venture ownership percentage | 50.00%
Rogers INOAC Corporation (RIC) | INOAC Corporation |
Schedule of Equity Method Investments [Line Items] |
Joint venture ownership percentage | 50.00%
Rogers INOAC Suzhou Corporation (RIS) | INOAC Corporation |
Schedule of Equity Method Investments [Line Items] |
Joint venture ownership percentage | 50.00%

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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
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