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Organization and Summary of Significant Accounting Policies - Property and Equipment (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |
Impairment of long-lived assets | $ 809,000 | $ 0 | $ 0
Property, Plant and Equipment [Line Items] |  |  |
Depreciation | $ 26,800,000 | $ 24,500,000 | $ 22,600,000
Buildings |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Useful life | 40 years |  |
Minimum | Manufacturing equipment |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Useful life | 4 years |  |
Minimum | Furniture and fixtures |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Useful life | 3 years |  |
Minimum | Land improvements |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Useful life | 10 years |  |
Minimum | Leasehold improvements |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Useful life | 4 years |  |
Maximum | Manufacturing equipment |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Useful life | 20 years |  |
Maximum | Furniture and fixtures |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Useful life | 20 years |  |
Maximum | Land improvements |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Useful life | 20 years |  |
Maximum | Leasehold improvements |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Useful life | 25 years |  |

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- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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- Definition The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 225 -Section 45 -Paragraph 11 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=68048823&loc=d3e92212-112881 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Impairment -URI http://asc.fasb.org/extlink&oid=6515133 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64862545&loc=d3e2921-110230 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2420-110228 + Details
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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