v3.8.0.1

Organization and Summary of Significant Accounting Policies - Narrative - Revenue Recognition (Details)	12 Months Ended
	Dec. 31, 2017
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Period of time average selling prices are observed to establish best estimate of selling price	12 months
Minimum [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Product or service delivery period	3 months
Maximum [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Product or service delivery period	6 months

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- Definition

Revenue Recognition, Multiple-Deliverable Arrangements, Delivery Time Frame

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Revenue Recognition, Multiple-Deliverable Arrangements, Determination of Selling Price, Period

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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.

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