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Long-Term Debt
6 Months Ended
Jun. 30, 2020
Debt Disclosure [Abstract]  
Long-term debt

Note 8 Long-term debt:  

During the first six months of 2020, our wholly owned subsidiary, NLKW Holding, LLC had no borrowings or repayments under its $50 million secured revolving credit facility with Valhi.  At June 30, 2020, $.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 six months ended June 30, 2020 was 5.72%. The interest rate was 5.13% at June 30, 2020.  We are in compliance with all covenants at June 30, 2020.