Current and Long-Term Financing (Tables)

12 Months Ended

Dec. 31, 2016

Debt Disclosure [Abstract]

Schedule of Debt

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

	December 31
	2016			2015
Total outstanding borrowings:
Revolving credit agreements:
NACoal	$	80,000		$	100,000
HBB	37,917			57,513
	$	117,917		$	157,513
Capital lease obligations and other term loans — NACoal	$	16,039		$	11,617
Other debt — HBB	797			852
Total debt outstanding	$	134,753		$	169,982
Current portion of borrowings outstanding:
NACoal	$	1,744		$	1,504
HBB	12,714			8,365
	$	14,458		$	9,869
Long-term portion of borrowings outstanding:
NACoal	$	94,295		$	110,113
HBB	26,000			50,000
	$	120,295		$	160,113
Total available borrowings, net of limitations, under revolving credit agreements:
NACoal	$	223,933		$	223,795
HBB	112,975			111,590
KC	20,525			18,299
	$	357,433		$	353,684
Unused revolving credit agreements:
NACoal	$	143,933		$	123,795
HBB	75,058			54,077
KC	20,525			18,299
	$	239,516		$	196,171
Weighted average stated interest rate on total borrowings:
NACoal	2.9		%	2.4		%
HBB	2.3		%	2.3		%
Weighted average effective interest rate on total borrowings (including interest rate swap agreements):
NACoal	3.4		%	3.3		%
HBB	2.7		%	2.7		%

Schedule of Maturities of Total Debt, Excluding Capital Leases

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

2017	$	202
2018	80,213
2019	225
2020	236
2021	38,965
Thereafter	6,247
	$	126,088