XML 65 R13.htm IDEA: XBRL DOCUMENT
v3.20.1

Marketable Securities | 12 Months Ended
--- | ---
Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract] |
Marketable Securities |
Note 5 - Marketable Securities |  |  |  |  |  |  |
The Company's investment in marketable securities as of December 31, 2018 and 2019 are classified as ''held-to-maturity'' and consist of the following:
|  |  |  |  | Gross |  |  | Gross |  |  |  |
|  |  |  |  | unrealized |  |  | unrealized |  |  |  |
|  | Amortized |  |  | holding |  |  | holding |  |  | Aggregate |
|  | cost basis** |  |  | gains |  |  | (losses) |  |  | fair value* |
|  | US$ thousands |
At December 31, 2019 |  |  |  |  |  |  |  |  |  |  |  |
Held to maturity: |  |  |  |  |  |  |  |  |  |  |  |
Corporate debt securities and government debt securities |  |  |  |  |  |  |  |  |  |  |  |
Current |  |  | 14,170 |  |  |  | 24 |  |  |  | (97 | ) |  |  | 14,097 |
Non-Current |  |  | 46,955 |  |  |  | 408 |  |  |  | (112 | ) |  |  | 47,251 |
|  |  | 61,125 |  |  |  | 432 |  |  |  | (209 | ) |  |  | 61,348 |
At December 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Held to maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate debt securities and government debt securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current |  |  | 1,610 |  |  |  | - |  |  |  | (22 | ) |  |  | 1,588 |
Non-Current |  |  | 46,052 |  |  |  | - |  |  |  | (778 | ) |  |  | 45,274 |
|  |  | 47,662 |  |  |  | - |  |  |  | (800 | ) |  |  | 46,862 |
* | Fair value is being determined using quoted market prices in active markets (Level 2).
** | Including accrued interest in the amount of US$ 450 thousand and US$ 538 thousand as of December 31, 2018 and 2019 respectively. The accrued interest is presented as part of other account receivable on the balance sheet.
Activity in marketable securities in 2019 |  | US$ thousands |
Balance at January 1, 2019 |  |  | 47,662 |
Purchases of marketable securities |  |  | 15,604 |
Discount on marketable securities, net |  |  | (144 | )
Proceeds from maturity of marketable securities |  |  | (1,997 | )
Balance at December 31, 2019 |  |  | 61,125 |
The following table summarizes the gross unrealized losses on investment securities for which other-than-temporary impairments have not been recognized and the fair value of those securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at December 31, 2019:
|  | Less than 12 months |  |  | 12 months or more |  |  | Total |
|  | Unrealized Losses |  |  | Fair value |  |  | Unrealized Losses |  |  | Fair value |  |  | Unrealized Losses |  |  | Fair value |
Held to maturity:
Corporate debt securities and government debt securities |  |  | (38 | ) |  |  | 4,968 |  |  |  | (171 | ) |  |  | 20,100 |  |  |  | (209 | ) |  |  | 25,068 |
The unrealized losses on the investments were caused by changes in interest rate. The Company has the ability and intent to hold these investments until maturity and it is more likely than not that the Company will not be required to sell any of the securities before recovery; therefore these investments are not considered other than temporarily impaired.

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

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