CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
CURRENT ASSETS
Cash and cash equivalents	$ 18,025	$ 5,872
Accounts receivable, net	353,912	363,053
Receivables from related parties	27,316	7,523
Inventories	12,473	17,483
Prepaid expenses	6,236	12,354
Other current assets	740	695
Total current assets	418,702	406,980
Property, plant and equipment, net	293,150	352,772
Sand reserves	68,257	68,351
Operating lease right-of-use assets	33,210	43,446
Intangible assets, net	5,282	5,788
Goodwill	12,608	67,581
Other non-current assets	7,261	7,467
Total assets	838,470	952,385
CURRENT LIABILITIES
Accounts payable	31,866	39,220
Payables to related parties	14	526
Accrued expenses and other current liabilities	36,741	40,754
Current operating lease liability	13,387	16,432
Income taxes payable	29,729	33,465
Total current liabilities	111,737	130,397
Long-term debt	89,250	80,000
Deferred income tax liabilities	37,593	36,873
Long-term operating lease liability	19,802	27,102
Asset retirement obligations	4,640	4,241
Other liabilities	5,383	5,031
Total liabilities	268,405	283,644
COMMITMENTS AND CONTINGENCIES (Note 18)
EQUITY
Common stock, $0.01 par value, 200,000,000 shares authorized, 45,762,200 and 45,108,545 issued and outstanding at June 30, 2020 and December 31, 2019	458	451
Additional paid in capital	536,333	535,094
Retained earnings	37,326	136,502
Accumulated other comprehensive loss	(4,052)	(3,306)
Total equity	570,065	668,741
Total liabilities and equity	838,470	952,385
Customer relationships
CURRENT ASSETS
Intangible assets, net	496	583
Trade names
CURRENT ASSETS
Intangible assets, net	$ 4,786	$ 5,205