6. Debt	9 Months Ended
Sep. 30, 2017
Debt Disclosure [Abstract]
Debt	Line of Credit We have a $500,000 line of credit with a variable interest rate computed on a 360-day year. The line of credit agreement requires us to comply with various financial covenants as well as customary affirmative and negative covenants that restrict our ability to, among other things, incur debt and liens, make significant investments, dispose of assets and make distributions without prior consent. The line of credit is secured by accounts receivable. The line of credit contains certain financial covenants, including a fixed charge coverage ratio and a tangible net worth. At September 30, 2017, we were in compliance with all of the financial covenants under the line of credit. As of September 30, 2017, we had no amount outstanding under the line of credit and have the entire amount remaining available of $500,000.

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://www.xbrl.org/2003/role/presentationRef
-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