Long-Term Debt	3 Months Ended
Mar. 31, 2021
Debt Disclosure [Abstract]
Long-term debt	Note 8 – Long-term debt: During the first three months of 2021, our wholly-owned subsidiary, NLKW Holding, LLC had no borrowings or repayments under its $50 million secured revolving credit facility with Valhi. At March 31, 2021, $.5 million was outstanding and $49.5 million was available for future borrowing under this facility. Outstanding borrowings bear interest at the prime rate plus 1.875% per annum, and the average interest rate for the three months ended March 31, 2021 was 5.13%. The interest rate under this facility as of March 31, 2021 was 5.13%. We are in compliance with all covenants at March 31, 2021.

Long-Term Debt

3 Months Ended

Mar. 31, 2021

Note 8 – Long-term debt:

During the first three months of 2021, our wholly-owned subsidiary, NLKW Holding, LLC had no borrowings or repayments under its $50 million secured revolving credit facility with Valhi. At March 31, 2021, $.5 million was outstanding and $49.5 million was available for future borrowing under this facility. Outstanding borrowings bear interest at the prime rate plus 1.875% per annum, and the average interest rate for the three months ended March 31, 2021 was 5.13%. The interest rate under this facility as of March 31, 2021 was 5.13%. We are in compliance with all covenants at March 31, 2021.