Debt	12 Months Ended
Dec. 31, 2018
Debt [Abstract]
Debt	Note R – Debt On August 9, 2018, the Company entered into a credit agreement providing a revolving credit facility with a $40,000 limit, with the option for up to an additional $35,000 in incremental loans at the discretion of the lenders. This credit agreement, which has an expiration date of August 9, 2022, replaced the Company's revolving line of credit that was to expire on September 23, 2018. Interest on this credit facility is referenced to the London Interbank Offered Rate and can be fixed for periods of up to one year at the Company's option. Outstanding drawings on this revolving credit facility were $20,000 as of December 31, 2018. At December 31, 2018, the effective interest rate was 3.61%, and the Company had $20,000 remaining under the revolving credit facility. The current outstanding borrowings were used to repay the previous line of credit. The Company's revolving credit facility has two financial covenants, each of which were met as of December 31, 2018, requiring the Company to have a minimum U.S. generally accepted accounting principles net worth and a maximum consolidated leverage ratio of 0.35 to 1.00.

Debt

12 Months Ended

Dec. 31, 2018

Note R – Debt

On August 9, 2018, the Company entered into a credit agreement providing a revolving credit facility with a $40,000 limit, with the option for up to an additional $35,000 in incremental loans at the discretion of the lenders. This credit agreement, which has an expiration date of August 9, 2022, replaced the Company's revolving line of credit that was to expire on September 23, 2018. Interest on this credit facility is referenced to the London Interbank Offered Rate and can be fixed for periods of up to one year at the Company's option. Outstanding drawings on this revolving credit facility were $20,000 as of December 31, 2018. At December 31, 2018, the effective interest rate was 3.61%, and the Company had $20,000 remaining under the revolving credit facility. The current outstanding borrowings were used to repay the previous line of credit. The Company's revolving credit facility has two financial covenants, each of which were met as of December 31, 2018, requiring the Company to have a minimum U.S. generally accepted accounting principles net worth and a maximum consolidated leverage ratio of 0.35 to 1.00.