Acquisitions (Tables)

6 Months Ended

Jun. 30, 2018

Schedule of useful lives of property, plant and equipment

Depreciation is calculated using the straight-line method over the estimated useful lives of the property, plant and equipment, which are:



	Years
Land improvements	10
Plant and buildings	5-15
Real estate properties	10-40
Railroad and sidings	30
Vehicles	3-5
Machinery, equipment and tooling	3-15
Furniture and fixtures	3-10
Deferred stripping costs	3

The acquisition cost has been allocated over the assets as set forth below.



Machinery, equipment and tooling	$	1,478
Plant and building	1,407
Railroad and sidings	9,926
Land improvements	2,738
Total assets acquired	$	15,549

Net property, plant and equipment consisted of:



	June 30, 2018		December 31, 2017
Machinery, equipment and tooling	$	11,791	$	7,802
Vehicles	1,671		1,546
Furniture and fixtures	760		720
Plant and building	143,622		81,561
Real estate properties	4,441		4,432
Railroad and sidings	25,691		10,254
Land improvements	25,870		16,378
Asset retirement obligation	10,493		8,408
Mineral properties	9,879		9,878
Deferred mining costs	782		657
Construction in progress	22,527		56,493
	257,527		198,129
Less: accumulated depreciation and depletion	33,534		26,367
Total property, plant and equipment, net	$	223,993	$	171,762

Schedule of assets acquired and liabilities assumed



	Fair Value		Useful Life (in years)
Assets Acquired
Accounts receivable	$	112
Inventory	1,700
Prepaid expenses and other current assets	126
Total current assets acquired	$	1,938
Property, plant and equipment	740
Customer relationships	270		1 year
Developed technology	18,800		6 years
Trade name	900		Indefinite
Goodwill	16,935
Other assets	225
Total non-current assets acquired	37,870
Total assets acquired	$	39,808

Liabilities Assumed
Accounts payable	$	331
Accrued and other expenses	399
Other current liabilities
Total liabilities assumed	730
Estimated fair value of net assets acquired	$	39,078

Schedule of consideration transferred

The Company’s preliminary allocation of the purchase price in connection with the acquisition was calculated as follows. The working capital adjustment may be adjusted to determine the final allocation of the purchase price.



Base price - cash	$	30,000
Contingent consideration – earnout	9,200
Working capital adjustment	(122		)
Total purchase consideration	$	39,078