Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 35,918	$ 40,038
Restricted cash	61	64
Trade accounts receivable, net of allowances	170,168	187,592
Inventories	142,406	143,571
Disposal Group, Including Discontinued Operation, Assets, Current	16	1,354
Financing Receivable, before Allowance for Credit Loss, Current	0	7,544
Prepaid expenses and other current assets	22,563	20,528
Total current assets	371,132	400,691
Property, plant, and equipment:
Land and building	75,206	78,746
Machinery and equipment	1,316,661	1,265,732
Automobiles and trucks	33,163	35,568
Chemical plants	189,416	188,641
Construction in progress	50,055	44,419
Total property, plant, and equipment	1,664,501	1,613,106
Less accumulated depreciation	(803,109)	(759,175)
Net property, plant, and equipment	861,392	853,931
Other assets:
Goodwill	25,784	25,859
Patents, trademarks and other intangible assets, net of accumulated amortization	76,225	82,184
Deferred tax assets, net	19	13
Operating lease right-of-use assets	57,848	0
Other assets	23,300	22,849
Total other assets	183,176	130,905
Total assets	1,415,700	1,385,527
Current liabilities:
Trade accounts payable	97,142	80,279
Unearned income	26,896	26,695
Accrued liabilities	87,127	89,232
Disposal Group, Including Discontinued Operation, Liabilities, Current	1,907	4,145
Total current liabilities	213,072	200,351
Long-term debt, net	858,272	815,560
Deferred income taxes	3,729	3,242
Decommissioning and other asset retirement obligations, net	12,603	12,202
Preferred Units	0	27,019
Warranty Liability	1,038	2,073
Operating lease liabilities	45,993	0
Other liabilities	7,465	12,331
Total long-term liabilities	929,100	872,427
Equity:
Common stock, par value $0.01 per share	1,284	1,285
Additional paid-in capital	465,615	460,680
Treasury stock, at cost	(19,164)	(18,950)
Accumulated other comprehensive income (loss)	(55,242)	(51,663)
Retained earnings	(248,691)	(217,952)
Total TETRA stockholders' equity	143,802	173,400
Noncontrolling interests	129,726	139,349
Total equity	273,528	312,749
Total liabilities and equity	$ 1,415,700	$ 1,385,527