XML 42 R24.htm IDEA: XBRL DOCUMENT
v3.20.2

Marketable Securities | 12 Months Ended
--- | ---
Sep. 30, 2020
Marketable Securities [Abstract] |
Marketable Securities | 16. Marketable Securities The amortized cost and fair value of marketable securities as of September 30, 2020 and 2019 were as follows:
(in thousands) |  | September 30, 2020 |
|  | Amortized cost |  |  | Gross unrealized gains |  |  | Gross unrealized losses |  |  | Fair value |
Corporate notes/bonds |  | $ | 58,793 |  |  | $ | 323 |  |  | $ | (17 | ) |  | $ | 59,099 |
(in thousands) |  | September 30, 2019 |
|  | Amortized cost |  |  | Gross unrealized gains |  |  | Gross unrealized losses |  |  | Fair value |
Commercial paper |  | $ | 999 |  |  | $ | — |  |  | $ | — |  |  | $ | 999 |
Corporate notes/bonds |  |  | 56,318 |  |  |  | 146 |  |  |  | (28 | ) |  |  | 56,436 |
|  | $ | 57,317 |  |  | $ | 146 |  |  | $ | (28 | ) |  | $ | 57,435 |
The following tables summarize the fair value and gross unrealized losses aggregated by category and the length of time that individual securities have been in a continuous unrealized loss position as of September 30, 2020 and 2019.
(in thousands) |  | September 30, 2020 |
|  | Less than twelve months |  |  | Greater than twelve months |  |  | Total |
|  | Fair value |  |  | Gross unrealized loss |  |  | Fair value |  |  | Gross unrealized loss |  |  | Fair value |  |  | Gross unrealized loss |
Corporate notes/bonds |  | $ | 9,841 |  |  | $ | (17 | ) |  | $ | — |  |  | $ | — |  |  | $ | 9,841 |  |  | $ | (17 | )
(in thousands) |  | September 30, 2019 |
|  | Less than twelve months |  |  | Greater than twelve months |  |  | Total |
|  | Fair value |  |  | Gross unrealized loss |  |  | Fair value |  |  | Gross unrealized loss |  |  | Fair value |  |  | Gross unrealized loss |
Corporate notes/bonds |  | $ | 12,419 |  |  | $ | (14 | ) |  | $ | 16,369 |  |  | $ | (14 | ) |  | $ | 28,788 |  |  | $ | (28 | )
The following table presents our available-for-sale marketable securities by contractual maturity date as of September 30, 2020 and 2019.
(in thousands) |  | September 30, 2020 |  |  | September 30, 2019 |
|  | Amortized cost |  |  | Fair value |  |  | Amortized cost |  |  | Fair value |
Due in one year or less |  | $ | 27,727 |  |  | $ | 27,899 |  |  | $ | 27,725 |  |  | $ | 27,735 |
Due after one year through three years |  |  | 31,066 |  |  |  | 31,200 |  |  |  | 29,592 |  |  |  | 29,700 |
|  | $ | 58,793 |  |  | $ | 59,099 |  |  | $ | 57,317 |  |  | $ | 57,435 |

X
- Definition The entire disclosure for investments in certain debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2209399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2324412 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI http://asc.fasb.org/topic&trid=2196928 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2176304 + Details
Name: | us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_MarketableSecuritiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration