Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 5,498	$ 6,951
Accounts receivable	30,054	10,729
Inventories	12,644	14,185
Prepaid expenses and other	3,324	3,154
Total current assets	51,520	35,019
Property, plant and equipment, net	171,945	149,205
Advanced coal royalties	3,250	3,045
Other assets	1,041	975
Total Assets	227,756	188,244
Current liabilities
Accounts payable	13,851	16,393
Accrued expenses	11,156	8,094
Asset retirement obligations	734	71
Current portion of long-term debt	5,000	5,000
Other liabilities		287
Total current liabilities	30,741	29,845
Asset retirement obligations	12,665	12,707
Long-term debt, net	11,766	4,474
Deferred tax liability	4,670	109
Other long-term liabilities	701
Total liabilities	60,543	47,135
Commitments and contingencies
Stockholders' Equity
Common stock, $0.01 par value, 260,000,000 shares authorized, 40,942,581 and 40,082,467 shares issued and outstanding, respectively	409	401
Additional paid-in capital	153,976	150,926
Retained earnings (deficit)	12,828	(10,218)
Total stockholders' equity	167,213	141,109
Total Liabilities and Stockholders' Equity	$ 227,756	$ 188,244