Leases (Tables)

12 Months Ended

Dec. 31, 2013

Sale Leaseback Transaction [Line Items]

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

	Capital		Operating
	Leases		Leases
Year Ended December 31,
2014	$	12,059	$	90,565
2015	10,984		85,225
2016	9,842		73,158
2017	8,758		66,536
2018	8,128		41,221
Thereafter	21,272		81,321
Total minimum lease payments	$	71,043	$	438,026
Less amount representing interest (0.63% – 7.36%)	14,949
Present value of minimum lease payments	56,094
Less amount due in one year	8,498
Total Long-Term Capital Lease Obligation	$	47,596

333131 Mining Machinery and Equipment Manufacturing [Member]

Sale Leaseback Transaction [Line Items]

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

2014		2015		2016		2017		2018		Thereafter		Total
$	33,084	$	33,084	$	33,084	$	26,685	$	26,685	$	13,343	$	165,965

Discontinued Operations [Member]

Sale Leaseback Transaction [Line Items]

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

2014		2015		2016		2017		2018		Thereafter		Total
$	8,561	$	8,561	$	7,637	$	4,496	$	2,992	$	2,328	$	34,575