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Significant Suppliers and Customers | 12 Months Ended
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Jun. 30, 2017
Risks and Uncertainties [Abstract] |
Significant Suppliers and Customers | 16. Significant Suppliers and Customers We utilize a number of glass compositions in manufacturing our molded glass aspheres and lens array products. These glasses or equivalents are available from a large number of suppliers, including CDGM Glass Company Ltd., Ohara Corporation, and Sumita Optical Glass, Inc. Base optical materials, used in both GRADIUM and collimator products, are manufactured and supplied by a number of optical and glass manufacturers. ISP utilizes major infrared material suppliers located around the globe for a broad spectrum of infrared crystal and glass. The Company believes that a satisfactory supply of such production materials will continue to be available at reasonable prices, although there can be no assurance in this regard. In fiscal 2017, sales to three customers comprised an aggregate of approximately 26% of our annual revenue, and 26% of accounts receivable as of June 30, 2017. In fiscal 2016, sales to three customers comprised an aggregate of approximately 25% of our annual revenue, and 25% of accounts receivable as of June 30, 2016. The loss of any of these customers, or a significant reduction in sales to any such customer, would adversely affect our revenues.

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- Definition The entire disclosure for any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -URI http://asc.fasb.org/topic&trid=2134479 + Details
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- References No definition available. + Details
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