Significant Accounting Policies (Policies)	6 Months Ended
Jun. 30, 2020
Accounting Policies [Abstract]
Basis of Accounting, Policy [Policy Text Block]	*Basis of Presentation* The interim condensed consolidated financial statements have been prepared according to U.S Generally Accepted Accounting Principles (“U.S. GAAP”). The accompanying unaudited interim condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States. In the opinion of management, all adjustments considered necessary for a fair presentation have been included. Operating results for the three and six months ended June 30, 2020 are not necessarily indicative of the results that may be expected for the year ending December 31, 2020. For further information, reference is made to the consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10K for the year ended December 31, 2019. The significant accounting policies applied in the annual consolidated financial statements of the Company as of December 31, 2019, contained in the Company’s Annual Report on Form 10K filed with the Securities and Exchange Commission on February 28, 2020, have been applied consistently in these unaudited interim condensed consolidated financial statements.
New Accounting Pronouncements, Policy [Policy Text Block]	*Recently Adopted Accounting Pronouncements* On January 1, 2020, the Company adopted Accounting Standards Update (“ASU”) No. 2016-13, “Financial Instruments – Credit Losses on Financial Instruments” (“ASU 2016-13”) which requires that expected credit losses relating to financial assets be measured on an amortized cost basis and available-for-sale debt securities be recorded through an allowance for credit losses. ASU 2016-13 limits the amount of credit losses to be recognized for available-for-sale debt securities to the amount by which carrying value exceeds fair value and also requires the reversal of previously recognized credit losses if fair value increases. The adoption by the Company of the new guidance did not have a material impact on the Company’s consolidated financial statements.
Trade Receivables and Allowance Policy [Policy Text Block]	*Trade* *Receivable and Allowances* Trade receivable are recorded and carried at the original invoiced amount less an allowance for any potential uncollectible amounts. The Company makes estimates of expected credit losses for the allowance for doubtful accounts and allowance for unbilled receivables based upon its assessment of various factors, including historical experience, the age of the trade receivable balances, credit quality of its customers, current economic conditions, reasonable and supportable forecasts of future economic conditions, and other factors that may affect its ability to collect from customers. The estimated credit loss allowance is recorded as general and administrative expenses on the Company’s condensed consolidated statements of income (loss).
Marketable Securities, Policy [Policy Text Block]	*Marketable securities* The Company holds investments in marketable securities, consisting principally of corporate bonds. The Company classifies marketable securities as available-for-sale in its current assets because they represent investments of cash available for current operations. The Company’s available-for-sale investments are carried at estimated fair value with any unrealized gains and losses, net of taxes, included in accumulated other comprehensive income (loss) in stockholders' equity. Available-for-sale debt securities with an amortized cost basis in excess of estimated fair value are assessed to determine what amount of that difference, if any, is caused by expected credit losses. Expected credit losses on available-for-sale debt securities are recognized in interest and other income (expense), net on the Company’s condensed consolidated statements of income (loss), and any remaining unrealized losses, net of taxes, are included in accumulated other comprehensive income (loss) in stockholders' equity. The amount of credit losses recorded for the three and six months ended June 30, 2020 was not material. The Company has not recorded any impairment charge for unrealized losses in the periods presented. The Company determines realized gains or losses on sale of marketable securities on a specific identification method, and records such gains or losses as interest and other income (expense), net.
Use of Estimates, Policy [Policy Text Block]	*Use of* estimates The preparation of the interim condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates, judgments and assumptions. The Company’s management believes that the estimates, judgments and assumptions used are reasonable based upon information available at the time they are made. These estimates, judgments and assumptions can affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the dates of the interim condensed consolidated financial statements, and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates.

Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2020

Basis of Accounting, Policy [Policy Text Block]

Basis of Presentation

The interim condensed consolidated financial statements have been prepared according to U.S Generally Accepted Accounting Principles (“U.S. GAAP”).

The accompanying unaudited interim condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States. In the opinion of management, all adjustments considered necessary for a fair presentation have been included. Operating results for the three and six months ended June 30, 2020 are not necessarily indicative of the results that may be expected for the year ending December 31, 2020. For further information, reference is made to the consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10K for the year ended December 31, 2019.

The significant accounting policies applied in the annual consolidated financial statements of the Company as of December 31, 2019, contained in the Company’s Annual Report on Form 10K filed with the Securities and Exchange Commission on February 28, 2020, have been applied consistently in these unaudited interim condensed consolidated financial statements.

New Accounting Pronouncements, Policy [Policy Text Block]

Recently Adopted Accounting Pronouncements

On January 1, 2020, the Company adopted Accounting Standards Update (“ASU”) No. 2016-13, “Financial Instruments – Credit Losses on Financial Instruments” (“ASU 2016-13”) which requires that expected credit losses relating to financial assets be measured on an amortized cost basis and available-for-sale debt securities be recorded through an allowance for credit losses. ASU 2016-13 limits the amount of credit losses to be recognized for available-for-sale debt securities to the amount by which carrying value exceeds fair value and also requires the reversal of previously recognized credit losses if fair value increases. The adoption by the Company of the new guidance did not have a material impact on the Company’s consolidated financial statements.

Trade Receivables and Allowance Policy [Policy Text Block]

Trade Receivable and Allowances

Trade receivable are recorded and carried at the original invoiced amount less an allowance for any potential uncollectible amounts. The Company makes estimates of expected credit losses for the allowance for doubtful accounts and allowance for unbilled receivables based upon its assessment of various factors, including historical experience, the age of the trade receivable balances, credit quality of its customers, current economic conditions, reasonable and supportable forecasts of future economic conditions, and other factors that may affect its ability to collect from customers. The estimated credit loss allowance is recorded as general and administrative expenses on the Company’s condensed consolidated statements of income (loss).

Marketable Securities, Policy [Policy Text Block]

Marketable securities

The Company holds investments in marketable securities, consisting principally of corporate bonds. The Company classifies marketable securities as available-for-sale in its current assets because they represent investments of cash available for current operations. The Company’s available-for-sale investments are carried at estimated fair value with any unrealized gains and losses, net of taxes, included in accumulated other comprehensive income (loss) in stockholders' equity. Available-for-sale debt securities with an amortized cost basis in excess of estimated fair value are assessed to determine what amount of that difference, if any, is caused by expected credit losses. Expected credit losses on available-for-sale debt securities are recognized in interest and other income (expense), net on the Company’s condensed consolidated statements of income (loss), and any remaining unrealized losses, net of taxes, are included in accumulated other comprehensive income (loss) in stockholders' equity. The amount of credit losses recorded for the three and six months ended June 30, 2020 was not material. The Company has not recorded any impairment charge for unrealized losses in the periods presented. The Company determines realized gains or losses on sale of marketable securities on a specific identification method, and records such gains or losses as interest and other income (expense), net.

Use of Estimates, Policy [Policy Text Block]

Use of estimates

The preparation of the interim condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates, judgments and assumptions. The Company’s management believes that the estimates, judgments and assumptions used are reasonable based upon information available at the time they are made. These estimates, judgments and assumptions can affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the dates of the interim condensed consolidated financial statements, and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates.