Debt	12 Months Ended
Dec. 31, 2017
Debt [Abstract]
Debt	Note S – Debt The Company maintains a revolving line of credit with a $40,000 limit and an expiration date of September 23, 2018. Interest on this line of credit is referenced to LIBOR and can be fixed for periods of up to one year at the Company's option. Outstanding drawings on this line of credit were $20,000 as of both December 31, 2017 and 2016. At December 31, 2017, the effective interest rate was 2.65%. The Company had $20,000 remaining unused under the line of credit at December 31, 2017. These outstanding borrowings were used for general corporate purposes.

Debt

12 Months Ended

Dec. 31, 2017

Note S – Debt

The Company maintains a revolving line of credit with a $40,000 limit and an expiration date of September 23, 2018. Interest on this line of credit is referenced to LIBOR and can be fixed for periods of up to one year at the Company's option. Outstanding drawings on this line of credit were $20,000 as of both December 31, 2017 and 2016. At December 31, 2017, the effective interest rate was 2.65%. The Company had $20,000 remaining unused under the line of credit at December 31, 2017. These outstanding borrowings were used for general corporate purposes.