Inventories, Net (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Lime and limestone inventories:
Raw materials	$ 4,096	$ 4,693
Finished goods	1,994	2,153
Total	6,090	6,846
Service parts inventories	6,239	6,000
Total inventories	$ 12,329	$ 12,846

Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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