Long-Term Debt	9 Months Ended
Sep. 30, 2018
Debt Disclosure [Abstract]
Long-term debt	Note 8 – Long-term debt: During the first nine months of 2018, our wholly owned subsidiary, NLKW Holding, LLC had no borrowings or repayments under its $50 million secured revolving credit facility with Valhi. At September 30, 2018, we had outstanding borrowings of $0.5 million under such facility, and the remaining $49.5 million was available for future borrowing under this facility. Outstanding borrowings under such credit facility bear interest at the prime rate plus 1.875% per annum, and the average interest rate as of and for the nine months ended September 30, 2018 was 7.125% and 6.64%, respectively. We are in compliance with all of the covenants contained in such facility at September 30, 2018.

Long-Term Debt

9 Months Ended

Sep. 30, 2018

Note 8 – Long-term debt:

During the first nine months of 2018, our wholly owned subsidiary, NLKW Holding, LLC had no borrowings or repayments under its $50 million secured revolving credit facility with Valhi. At September 30, 2018, we had outstanding borrowings of $0.5 million under such facility, and the remaining $49.5 million was available for future borrowing under this facility. Outstanding borrowings under such credit facility bear interest at the prime rate plus 1.875% per annum, and the average interest rate as of and for the nine months ended September 30, 2018 was 7.125% and 6.64%, respectively. We are in compliance with all of the covenants contained in such facility at September 30, 2018.