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Agreements with SK hynix and Micron (Details 2) - Jun. 30, 2015 - USD ($) $ in Thousands | Total | Total | Total | Total
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SK hynix [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Cash Received to date in 2015 | $ 12,000 | $ 24,000 |  | $ 96,000
Estimated to Be Received in Remainder of 2015 | 32,000 | 32,000 | $ 32,000 | 32,000
Estimated to Be Received in 2016 | 64,000 | 64,000 | 64,000 | 64,000
Estimated to Be Received in 2017 | 48,000 | 48,000 | 48,000 | 48,000
Estimated to Be Received in 2018 | 40,000 | 40,000 | 40,000 | 40,000
Estimated to Be Received in 2019 | 32,000 | 32,000 | 32,000 | 32,000
Estimated to Be Received in 2020 | 216,000 | 216,000 | 216,000 | 216,000
Total Estimated Cash receipts | 528,000 | 528,000 | 528,000 | 528,000
SK hynix [Member] | Royalty revenue |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Cash Received to date in 2015 | 11,800 | 23,600 |  | 94,600
Estimated to Be Received in Remainder of 2015 | 31,600 | 31,600 | 31,600 | 31,600
Estimated to Be Received in 2016 | 63,900 | 63,900 | 63,900 | 63,900
Estimated to Be Received in 2017 | 48,000 | 48,000 | 48,000 | 48,000
Estimated to Be Received in 2018 | 40,000 | 40,000 | 40,000 | 40,000
Estimated to Be Received in 2019 | 32,000 | 32,000 | 32,000 | 32,000
Estimated to Be Received in 2020 | 216,000 | 216,000 | 216,000 | 216,000
Total Estimated Cash receipts | 526,100 | 526,100 | 526,100 | 526,100
SK hynix [Member] | Gain from settlement |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Cash Received to date in 2015 | 200 | 400 |  | 1,400
Estimated to Be Received in Remainder of 2015 | 400 | 400 | 400 | 400
Estimated to Be Received in 2016 | 100 | 100 | 100 | 100
Estimated to Be Received in 2017 | 0 | 0 | 0 | 0
Estimated to Be Received in 2018 | 0 | 0 | 0 | 0
Estimated to Be Received in 2019 | 0 | 0 | 0 | 0
Estimated to Be Received in 2020 | 0 | 0 | 0 | 0
Total Estimated Cash receipts | 1,900 | 1,900 | 1,900 | 1,900
Micron [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Cash Received to date in 2015 | 10,000 | 20,000 | 65,500 |
Estimated to Be Received in Remainder of 2015 | 20,000 | 20,000 | 20,000 | 20,000
Estimated to Be Received in 2016 | 40,000 | 40,000 | 40,000 | 40,000
Estimated to Be Received in 2017 | 40,000 | 40,000 | 40,000 | 40,000
Estimated to Be Received in 2018 | 40,000 | 40,000 | 40,000 | 40,000
Estimated to Be Received in 2019 | 40,000 | 40,000 | 40,000 | 40,000
Estimated to Be Received in 2020 | 34,500 | 34,500 | 34,500 | 34,500
Total Estimated Cash receipts | 280,000 | 280,000 | 280,000 | 280,000
Micron [Member] | Royalty revenue |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Cash Received to date in 2015 | 9,700 | 19,400 | 63,400 |
Estimated to Be Received in Remainder of 2015 | 19,300 | 19,300 | 19,300 | 19,300
Estimated to Be Received in 2016 | 39,500 | 39,500 | 39,500 | 39,500
Estimated to Be Received in 2017 | 40,000 | 40,000 | 40,000 | 40,000
Estimated to Be Received in 2018 | 40,000 | 40,000 | 40,000 | 40,000
Estimated to Be Received in 2019 | 40,000 | 40,000 | 40,000 | 40,000
Estimated to Be Received in 2020 | 34,500 | 34,500 | 34,500 | 34,500
Total Estimated Cash receipts | 276,700 | 276,700 | 276,700 | 276,700
Micron [Member] | Gain from settlement |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Cash Received to date in 2015 | 300 | 600 | 2,100 |
Estimated to Be Received in Remainder of 2015 | 700 | 700 | 700 | 700
Estimated to Be Received in 2016 | 500 | 500 | 500 | 500
Estimated to Be Received in 2017 | 0 | 0 | 0 | 0
Estimated to Be Received in 2018 | 0 | 0 | 0 | 0
Estimated to Be Received in 2019 | 0 | 0 | 0 | 0
Estimated to Be Received in 2020 | 0 | 0 | 0 | 0
Total Estimated Cash receipts | $ 3,300 | $ 3,300 | $ 3,300 | $ 3,300

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