Current and Long-Term Financing (Tables)

12 Months Ended

Dec. 31, 2018

Debt Disclosure [Abstract]

Schedule of Debt

The following table summarizes the Company's available and outstanding borrowings:

	December 31
	2018			2017
Total outstanding borrowings of NACoal:
Revolving credit agreement	$	4,000		$	50,000
Capital lease obligations and other term loans	7,021			8,146
Total debt outstanding	$	11,021		$	58,146
Current portion of borrowings outstanding	$	4,654		$	16,125
Long-term portion of borrowings outstanding	6,367			42,021
	$	11,021		$	58,146
Total available borrowings, net of limitations, under revolving credit agreement	$	148,481		$	148,591
Unused revolving credit agreement	$	144,481		$	98,591
Weighted average stated interest rate on total borrowings	4.8		%	3.8		%

Schedule of Maturities of Total Debt, Excluding Capital Leases

Annual maturities of total debt, excluding capital leases, are as follows:

2019	4,225
2020	237
2021	250
2022	263
2023	277
Thereafter	5,319
	$	10,571