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Balance Sheet Accounts (Tables) | 6 Months Ended
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Dec. 31, 2012
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Cash, Cash Equivalents, Shot-Term Investments and Marketable Securities | Cash, Cash Equivalents, Short-Term Investments and Marketable Securities Summary of Cash and Available-for-Sale Securities (in thousands)
| December 31, 2012 |  | June 30, 2012
Cash | $ | 30,656 |  |  | $ | 18,455 |
Cash equivalents | $ | 59,110 |  |  | $ | 36,141 |
Short-term investments | 35,204 |  |  | 23,358 |
Marketable securities | 71,208 |  |  | 75,561 |
Total available-for-sale | $ | 165,522 |  |  | $ | 135,060 |
Total cash and available for sale securities | $ | 196,178 |  |  | $ | 153,515 |
Available-for-sale Securities | Available-for-Sale Securities The following is a summary of available-for-sale securities (in thousands):
| Amortized Cost |  | Fair Value |  | Unrealized Holding Gains |  | Unrealized Holding Losses
December 31, 2012 |  |  |  |  |  |  |
Money market funds | $ | 59,110 |  |  | $ | 59,110 |  |  | $ | — |  |  | $ | — |
U.S. corporate debt securities | 98,706 |  |  | 98,899 |  |  | 268 |  |  | (75 | )
U.S. government agency securities | 7,508 |  |  | 7,513 |  |  | 5 |  |  | — |
| $ | 165,324 |  |  | $ | 165,522 |  |  | $ | 273 |  |  | $ | (75 | )
Classified as: |  |  |  |  |  |  |
Cash equivalents | $ | 59,110 |  |  | $ | 59,110 |  |  | $ | — |  |  | $ | — |
Short-term investments | 35,125 |  |  | 35,204 |  |  | 79 |  |  | — |
Marketable securities | 71,089 |  |  | 71,208 |  |  | 194 |  |  | (75 | )
| $ | 165,324 |  |  | $ | 165,522 |  |  | $ | 273 |  |  | $ | (75 | )
June 30, 2012 |  |  |  |  |  |  |
Money market funds | $ | 36,141 |  |  | $ | 36,141 |  |  | $ | — |  |  | $ | — |
U.S. corporate debt securities | 84,882 |  |  | 84,949 |  |  | 148 |  |  | (81 | )
U.S. government agency securities | 11,241 |  |  | 11,234 |  |  | 3 |  |  | (10 | )
U.S. municipal bonds | 2,738 |  |  | 2,736 |  |  | — |  |  | (2 | )
| $ | 135,002 |  |  | $ | 135,060 |  |  | $ | 151 |  |  | $ | (93 | )
Classified as: |  |  |  |  |  |  |
Cash equivalents | $ | 36,141 |  |  | $ | 36,141 |  |  | $ | — |  |  | $ | — |
Short-term investments | 23,311 |  |  | 23,358 |  |  | 48 |  |  | (1 | )
Marketable securities | 75,550 |  |  | 75,561 |  |  | 103 |  |  | (92 | )
| $ | 135,002 |  |  | $ | 135,060 |  |  | $ | 151 |  |  | $ | (93 | )
The amortized cost and estimated fair value of available-for-sale investments in debt securities at December 31, 2012, by contractual maturity, were as follows (in thousands):
| Amortized Cost |  | Fair Value
Due in 1 year or less | $ | 35,125 |  |  | $ | 35,204 |
Due in 1-2 years | 31,367 |  |  | 31,447 |
Due in 2-5 years | 39,722 |  |  | 39,761 |
Total investments in available for sale debt securities | $ | 106,214 |  |  | $ | 106,412 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | The following table presents the Company’s investments’ gross unrealized losses and fair values, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position.
| Less than 12 months |  | 12 months or more |  | Total
| Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses
December 31, 2012 |  |  |  |  |  |  |  |  |  |  |
U.S. corporate debt securities | $ | 26,202 |  |  | $ | (75 | ) |  | $ | — |  |  | $ | — |  |  | $ | 26,202 |  |  | $ | (75 | )
| $ | 26,202 |  |  | $ | (75 | ) |  | $ | — |  |  | $ | — |  |  | $ | 26,202 |  |  | $ | (75 | )
Schedule of Intangible Assets | The following tables summarize the components of gross and net intangible asset balances (in thousands):
| Weighted Average Remaining Amortization Period |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
December 31, 2012 |  |  |  |  |  |  |
Patents | 7.2 years |  | $ | 1,800 |  |  | $ | 775 |  |  | $ | 1,025 |
License Agreements | 10 years |  | 10,158 |  |  | 6,845 |  |  | 3,313 |
Other Intangibles | 2.7 years |  | 659 |  |  | 358 |  |  | 301 |
|  |  | $ | 12,617 |  |  | $ | 7,978 |  |  | $ | 4,639 |
| Weighted Average Remaining Amortization Period |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
June 30, 2012 |  |  |  |  |  |  |
Patents | 7.4 years |  | $ | 1,800 |  |  | $ | 669 |  |  | $ | 1,131 |
License Agreements | 9.3 years |  | 10,158 |  |  | 6,231 |  |  | 3,927 |
Other Intangibles | 0.3 years |  | 324 |  |  | 276 |  |  | 48 |
|  |  | $ | 12,282 |  |  | $ | 7,176 |  |  | $ | 5,106 |
Schedule of Expected Amortization Expense | Amortization expense expected to be recorded for each of the next five years is as follows (in thousands):
For the fiscal year ending: |
Remaining for fiscal 2013 | $ | 680 |
2014 | 916 |
2015 | 549 |
2016 | 375 |
2017 | 302 |
Thereafter | 1,817 |
Total | $ | 4,639 |
Schedule of Deferred Revenue, Net | The following table summarizes deferred revenue, net at December 31, 2012 and June 30, 2012, respectively (in thousands):
| December 31, 2012 |  | June 30, 2012
Deferred services | $ | 36,118 |  |  | $ | 37,708 |
Deferred product: |  |  |
Deferred revenue | 2,231 |  |  | 2,236 |
Deferred cost of sales | (775 | ) |  | (616 | )
Deferred product revenue, net | 1,456 |  |  | 1,620 |
Balance at end of period | 37,574 |  |  | 39,328 |
Less: current portion | 29,441 |  |  | 31,769 |
Non-current deferred revenue, net | $ | 8,133 |  |  | $ | 7,559 |
Change in Deferred Support Revenue | The change in the Company’s deferred support revenue balance in relation to these arrangements was as follows (in thousands):
| Three Months Ended |  | Six Months Ended
| December 31, 2012 |  | January 1, 2012 |  | December 31, 2012 |  | January 1, 2012
Balance beginning of period | $ | 35,661 |  |  | $ | 35,730 |  |  | $ | 37,461 |  |  | $ | 35,802 |
New support arrangements | 14,776 |  |  | 15,960 |  |  | 27,313 |  |  | 30,560 |
Recognition of support revenue | (14,640 | ) |  | (14,274 | ) |  | (28,977 | ) |  | (28,946 | )
Balance end of period | 35,797 |  |  | 37,416 |  |  | 35,797 |  |  | 37,416 |
Less: current portion | 27,664 |  |  | 29,853 |  |  | 27,664 |  |  | 29,853 |
Non-current deferred revenue | $ | 8,133 |  |  | $ | 7,563 |  |  | $ | 8,133 |  |  | $ | 7,563 |
Schedule of Deferred Distributors Revenue | The following table summarizes deferred distributors revenue, net of cost of sales to distributors at December 31, 2012 and June 30, 2012, respectively (in thousands):
| December 31, 2012 |  | June 30, 2012
Deferred distributors revenue | $ | 20,200 |  |  | $ | 20,361 |
Deferred cost of sales to distributors | (4,796 | ) |  | (5,042 | )
Total deferred distributors revenue, net of cost of sales to distributors | $ | 15,404 |  |  | $ | 15,319 |
Schedule of Product Warranty Liability | The following table summarizes the activity related to the Company’s product warranty liability during the three and six months ended December 31, 2012 and January 1, 2012:
| Three Months Ended |  | Six Months Ended
| December 31, 2012 |  | January 1, 2012 |  | December 31, 2012 |  | January 1, 2012
Balance beginning of period | $ | 2,971 |  |  | $ | 2,702 |  |  | $ | 2,871 |  |  | $ | 2,640 |
New warranties issued | 1,942 |  |  | 1,589 |  |  | 3,504 |  |  | 3,237 |
Warranty expenditures | (1,942 | ) |  | (1,640 | ) |  | (3,404 | ) |  | (3,226 | )
Balance end of period | $ | 2,971 |  |  | $ | 2,651 |  |  | $ | 2,971 |  |  | $ | 2,651 |
Schedules of Concentration of Risk, by Risk Factor | The following table sets forth major customers accounting for 10% or more of our net revenue (amounts for the three and six months ended January 1, 2012 have been revised to correct previously disclosed amounts):
|  | Three Months Ended |  | Six Months Ended
|  | December 31, 2012 |  | January 1, 2012 |  | December 31, 2012 |  | January 1, 2012
Westcon Group Inc. |  | 14 | % |  | 22 | % |  | 15 | % |  | 19 | %
Scansource, Inc. |  | 12 | % |  | * |  |  | 12 | % |  | 13 | %
Tech Data Corporation |  | 12 | % |  | * |  |  | 11 | % |  | * |
Ericsson AB |  | 10 | % |  | 12 | % |  | 10 | % |  | 11 | %
* Less than 10% of revenue |  |  |  |  |  |  |  |
The following table sets forth major customers accounting for 10% or more of our accounts receivable balance:
|  | December 31, 2012 |  | June 30, 2012
Ericsson AB |  | 16 | % |  | 21 | %
Scansource Inc. |  | 11 | % |  | * |
Westcon Group Inc. |  | * |  |  | 16 | %
* Less than 10% of accounts receivable |  |  |  |

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