Note 11 - Subsequent Events	6 Months Ended
Jun. 30, 2020
Notes to Financial Statements
Subsequent Events [Text Block]	11. SUBSEQUENT EVENTS Effective July 1, 2020, the Company modified the terms of one of its Hong Kong office leases. See Note 5. On August 3, 2020, the Board of Directors declared a quarterly cash dividend of $0.20 on each share of common stock outstanding. The dividend will be payable on August 28, 2020 to stockholders of record on August 18, 2020. The declaration and payment of any future dividends on shares of common stock will be at the sole discretion of the Company’s Board of Directors.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

Name:	us-gaap_SubsequentEventsTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration