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Significant Accounting Policies (Policies) | 9 Months Ended
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Sep. 30, 2023
Accounting Policies [Abstract] |
Basis of Accounting, Policy [Policy Text Block] | Basis of Presentation The unaudited interim consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. As a result, certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted. In the opinion of management, the accompanying unaudited interim consolidated financial statements contain all adjustments, consisting of normal recurring adjustments, considered necessary for a fair statement of the Company’s financial information for the interim periods presented. The results of operations of any interim period are not necessarily indicative of the results of operations to be expected for the fiscal year. These consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes included in the Company’s 2022 Annual Report on Form 10-K filed with the United States Securities and Exchange Commission (SEC) on March 3, 2023.
Consolidation, Policy [Policy Text Block] | Principles of Consolidation The consolidated financial statements include the accounts of the Company and all of its wholly-owned subsidiaries. All significant inter-company balances and transactions have been eliminated in consolidation.
Cash and Cash Equivalents, Policy [Policy Text Block] | Cash and Cash Equivalents The Company maintains substantially all of its cash balances at several institutions located in the United States, Hong Kong and China which at times may exceed insured limits. As of September 30, 2023, there was $10,000 and $1.4 million in bank accounts located in the United States and Hong Kong, respectively, in excess of insured limits. As of September 30, 2023, cash and cash equivalents included $3.6 million held in bank accounts located in China subject to foreign currency controls. The Company has not experienced any losses on such accounts. See Note 4 for additional information regarding the Company's investments in cash equivalents held in brokerage accounts. The Company believes that it is not exposed to significant credit risk due to the financial strength of the depository institutions in which its cash and cash equivalents are held.
Earnings Per Share, Policy [Policy Text Block] | Net Income Per Common Share Diluted net income per common share is determined using the weighted-average number of common shares outstanding during the period, adjusted for the dilutive effect of common stock equivalents. The dilutive effect of non-vested restricted stock is reflected by application of the treasury stock method. Under the treasury stock method, the amount of compensation cost for future service that the Company has not yet recognized, if any, is assumed to be used to repurchase shares. The following table illustrates the computation of basic and diluted net income per common share for the periods indicated (in thousands, except per share data):
|  | Three Months Ended September 30, |
|  | 2023 |  |  | 2022 |
|  | Income (Numerator) |  |  | Shares (Denominator) |  |  | Per Share Amount |  |  | Income (Numerator) |  |  | Shares (Denominator) |  |  | Per Share Amount |
Basic net income per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income available to common stockholders |  | $ | 172 |  |  |  | 11,440 |  |  | $ | 0.02 |  |  | $ | 47 |  |  |  | 11,423 |  |  | $ | 0.00 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-vested restricted stock |  |  | — |  |  |  | 14 |  |  |  |  |  |  |  | — |  |  |  | — |  |  |  |  |
Diluted net income per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income available to common stockholders plus assumed dilution |  | $ | 172 |  |  |  | 11,454 |  |  | $ | 0.02 |  |  | $ | 47 |  |  |  | 11,423 |  |  | $ | 0.00 |
|  | Nine Months Ended September 30, |
|  | 2023 |  |  | 2022 |
|  | Income (Numerator) |  |  | Shares (Denominator) |  |  | Per Share Amount |  |  | Income (Numerator) |  |  | Shares (Denominator) |  |  | Per Share Amount |
Basic net income per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income available to common stockholders |  | $ | 210 |  |  |  | 11,432 |  |  | $ | 0.02 |  |  | $ | 125 |  |  |  | 11,341 |  |  | $ | 0.01 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-vested restricted stock |  |  | — |  |  |  | 17 |  |  |  |  |  |  |  | — |  |  |  | 82 |  |  |  |  |
Diluted net income per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income available to common stockholders plus assumed dilution |  | $ | 210 |  |  |  | 11,449 |  |  | $ | 0.02 |  |  | $ | 125 |  |  |  | 11,423 |  |  | $ | 0.01 |
New Accounting Pronouncements, Policy [Policy Text Block] | Recent Accounting Pronouncements In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which introduced an expected credit loss model for the impairment of financial assets measured at amortized cost basis and added Topic 326 to the FASB Accounting Standards Codification (“ASC”). In November 2019, the FASB issued ASU 2019-11, Codification Improvements to Topic 326, Financial Instruments - Credit Losses. The amendments to ASU 2019-11 clarify, correct and make improvements to Topic 326. ASU 2016-13 as well as the updates in ASU 2019-11 are effective for interim and annual periods beginning after December 15, 2022. The adoption of this standard did not have a material impact on the Company's financial statements. Other recently issued accounting pronouncements did not or are not believed by management to have a material impact on the Company’s present or future financial statements.

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- Definition Disclosure of accounting policy for cash and cash equivalents, including the policy for determining which items are treated as cash equivalents. Other information that may be disclosed includes (1) the nature of any restrictions on the entity's use of its cash and cash equivalents, (2) whether the entity's cash and cash equivalents are insured or expose the entity to credit risk, (3) the classification of any negative balance accounts (overdrafts), and (4) the carrying basis of cash equivalents (for example, at cost) and whether the carrying amount of cash equivalents approximates fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-1 + Details
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- Definition Disclosure of accounting policy regarding (1) the principles it follows in consolidating or combining the separate financial statements, including the principles followed in determining the inclusion or exclusion of subsidiaries or other entities in the consolidated or combined financial statements and (2) its treatment of interests (for example, common stock, a partnership interest or other means of exerting influence) in other entities, for example consolidation or use of the equity or cost methods of accounting. The accounting policy may also address the accounting treatment for intercompany accounts and transactions, noncontrolling interest, and the income statement treatment in consolidation for issuances of stock by a subsidiary. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483426/235-10-50-4 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481203/810-10-50-1 + Details
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- Definition Disclosure of accounting policy for computing basic and diluted earnings or loss per share for each class of common stock and participating security. Addresses all significant policy factors, including any antidilutive items that have been excluded from the computation and takes into account stock dividends, splits and reverse splits that occur after the balance sheet date of the latest reporting period but before the issuance of the financial statements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-2 + Details
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