XML 22 R12.htm IDEA: XBRL DOCUMENT
v3.21.1

Note 6 - Marketable Securities | 3 Months Ended
--- | ---
Mar. 31, 2021
Notes to Financial Statements |
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] | 6. Marketable Securities The amortized cost and unrealized gains, net of marketable securities as of March 31, 2021 and December 31, 2020, are as follows (in thousands):
|  | As of March 31, 2021 |  |  | As of December 31, 2020 |
Marketable securities: |  |  |  |  |  |  |  |
Amortized cost |  | $ | 114,480 |  |  | $ | 114,531 |
Unrealized gains, net |  |  | 653,509 |  |  |  | 592,423 |
Total fair value |  | $ | 767,989 |  |  | $ | 706,954 |
During the three months ended March 31, 2021 and 2020, there were net unrealized gains on marketable securities of $61.1 million and net unrealized losses on marketable securities of $4.7 million, respectively. These net unrealized gains and losses are included in Gain/(loss) on marketable securities, net on the Company’s Condensed Consolidated Statements of Income. See Footnote 12 of the Company’s Condensed Consolidated Financial Statements for fair value disclosure.

X
- References No definition available. + Details
Name: | us-gaap_DisclosureTextBlockAbstract
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