Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 20,850	$ 29,840
Restricted cash	262	6,691
Trade accounts receivable, net of allowances	152,872	114,284
Inventories	122,045	106,546
Assets held for sale	30	214
Prepaid expenses and other current assets	19,372	18,216
Total current assets	315,431	275,791
Property, plant, and equipment:
Land and building	79,258	78,929
Machinery and equipment	1,358,008	1,348,286
Automobiles and trucks	35,359	36,341
Chemical plants	185,663	182,951
Construction in progress	14,458	11,918
Total property, plant, and equipment	1,672,746	1,658,425
Less accumulated depreciation	(776,876)	(712,974)
Net property, plant, and equipment	895,870	945,451
Other assets:
Goodwill	6,636	6,636
Patents, trademarks and other intangible assets, net of accumulated amortization	63,645	67,713
Deferred tax assets, net	28	28
Other assets	19,800	19,921
Total other assets	90,109	94,298
Total assets	1,301,410	1,315,540
Current liabilities:
Trade accounts payable	64,320	45,889
Unearned income	16,659	13,879
Accrued liabilities	59,127	55,666
Decommissioning and other asset retirement obligations, net of current portion	492	1,451
Total current liabilities	140,598	116,885
Long-term debt, net of current portion	624,126	623,730
Deferred income taxes	7,081	7,296
Decommissioning and other asset retirement obligations, net	56,025	54,027
Preferred Units	68,309	77,062
Warranty Liability	6,936	18,503
Other liabilities	15,825	17,571
Total long-term liabilities	778,302	798,189
Equity:
Common stock, par value $0.01 per share	1,185	1,174
Additional paid-in capital	424,129	419,237
Treasury stock, at cost	(18,612)	(18,316)
Accumulated other comprehensive income (loss)	(43,133)	(51,285)
Retained earnings	(127,595)	(117,287)
Total TETRA stockholders' equity	235,974	233,523
Noncontrolling interests	146,536	166,943
Total equity	382,510	400,466
Total liabilities and equity	$ 1,301,410	$ 1,315,540