Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 16,683	$ 13,592
Trade accounts receivable, net of allowances of $517 in 2023 and $538 in 2022	117,604	129,631
Inventories	83,941	72,113
Prepaid expenses and other current assets	18,587	23,112
Total current assets	236,815	238,448
Property, plant, and equipment:
Land and building	24,336	25,723
Machinery and equipment	313,968	318,693
Automobiles and trucks	11,112	11,832
Chemical plants	63,757	63,528
Construction in progress	9,657	7,660
Total property, plant, and equipment	422,830	427,436
Less accumulated depreciation	(317,579)	(325,856)
Net property, plant, and equipment	105,251	101,580
Other assets:
Patents, trademarks and other intangible assets, net of accumulated amortization of $48,241 in 2023 and $46,996 in 2022	32,005	32,955
Operating lease right-of-use assets	33,973	33,818
Investments	13,902	14,286
Other assets	13,638	13,279
Total other assets	93,518	94,338
Total assets	435,584	434,366
Current liabilities:
Trade accounts payable	49,334	49,121
Current portion of long-term debt	2,162	3
Compensation and employee benefits	19,700	30,958
Operating lease liabilities, current portion	8,249	7,795
Accrued taxes	8,961	9,913
Accrued liabilities and other	22,127	25,557
Current liabilities associated with discontinued operations	914	920
Total current liabilities	111,447	124,267
Long-term debt, net	160,510	156,455
Operating lease liabilities	27,716	28,108
Asset retirement obligations	13,828	13,671
Deferred income taxes	2,059	2,038
Other liabilities	3,871	3,430
Total long-term liabilities	207,984	203,702
Commitments and contingencies (Note 7)
Equity:
Common stock, par value 0.01 per share; 250,000,000 shares authorized at March 31, 2023 and December 31, 2022; 132,522,347 shares issued at March 31, 2023 and 131,800,975 shares issued at December 31, 2022	1,325	1,318
Additional paid-in capital	479,993	477,820
Treasury stock, at cost; 3,138,675 shares held at March 31, 2023 and December 31, 2022	(19,957)	(19,957)
Accumulated other comprehensive loss	(47,521)	(49,063)
Retained deficit	(296,453)	(302,493)
Total TETRA stockholders’ equity	117,387	107,625
Noncontrolling interests	(1,234)	(1,228)
Total equity	116,153	106,397
Total liabilities and equity	$ 435,584	$ 434,366
Treasury stock, shares held	3,138,675	3,138,675