Note 6. Line of Credit	12 Months Ended
Dec. 31, 2020
Line of Credit Facility [Abstract]
Line of Credit	Effective October 3, 2019, the Company renewed its unsecured Line of Credit, which increased the term to two years, with all other provisions remaining the same. The amount of funds available for borrowing are $3,000,000 and the interest rate is LIBOR plus 1.75%. As of December 31, 2020, the interest rate was 1.89% and the Company did not owe any amounts on the Line of Credit.

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-URI http://asc.fasb.org/topic&trid=2208564

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