| Schedule of fair value, assets and liabilities measured on recurring basis |
Assets measured at fair value on a recurring basis at September 30, 2017 are as follows (amounts in thousands): | | | | | | | | | | | | | | Quoted Prices in Active Markets for Identical Instruments (Level 1) | | Significant Other Observable Inputs (Level 2) | | Total Balance | Assets | | | | | | Cash and cash equivalents: | | | | | | Money market mutual funds | $ | 179,694 |
| | $ | — |
| | $ | 179,694 |
| Deposit accounts | — |
| | 646,713 |
| | 646,713 |
| Short-term investments: | | | | | | Marketable equity securities
| 2,943 |
| | — |
| | 2,943 |
| Corporate bonds and debt | — |
| | 293,708 |
| | 293,708 |
| Government agency bonds | — |
| | 181,530 |
| | 181,530 |
| Municipal bonds - taxable | | | 10,016 |
| | 10,016 |
| Long-term investments: | | | | | | Corporate bonds and debt | — |
| | 99,827 |
| | 99,827 |
| Government agency bonds | — |
| | 429,422 |
| | 429,422 |
| Total assets measured at fair value | $ | 182,637 |
| | $ | 1,661,216 |
| | $ | 1,843,853 |
|
Assets measured at fair value on a recurring basis at March 31, 2017 are as follows (amounts in thousands): | | | | | | | | | | | | | | Quoted Prices in Active Markets for Identical Instruments (Level 1) | | Significant Other Observable Inputs (Level 2) | | Total Balance | Assets | | | | | | Cash and cash equivalents: | | | | | | Money market mutual funds | $ | 343,815 |
| | $ | — |
| | $ | 343,815 |
| Deposit accounts | — |
| | 564,869 |
| | 564,869 |
| Short-term investments: | | | | | | Marketable equity securities | 1,586 |
| | — |
| | 1,586 |
| Corporate bonds and debt | — |
| | 165,207 |
| | 165,207 |
| Government agency bonds | — |
| | 161,973 |
| | 161,973 |
| Municipal bonds - non-taxable | — |
| | 55,279 |
| | 55,279 |
| Municipal bonds - taxable | — |
| | 10,043 |
| | 10,043 |
| Long-term investments: | | | | | | Corporate bonds and debt | — |
| | 42,565 |
| | 42,565 |
| Government agency bonds | — |
| | 64,892 |
| | 64,892 |
| Total assets measured at fair value | $ | 345,401 |
| | $ | 1,064,828 |
| | $ | 1,410,229 |
|
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