Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 23,098	$ 29,840
Restricted cash	6,882	6,691
Trade accounts receivable, net of allowances	148,027	114,284
Inventories	118,085	106,546
Assets held for sale	44	214
Prepaid expenses and other current assets	20,037	18,216
Total current assets	316,173	275,791
Property, plant, and equipment:
Land and building	79,106	78,929
Machinery and equipment	1,345,741	1,348,286
Automobiles and trucks	36,453	36,341
Chemical plants	184,798	182,951
Construction in progress	25,866	11,918
Total property, plant, and equipment	1,671,964	1,658,425
Less accumulated depreciation	(760,061)	(712,974)
Net property, plant, and equipment	911,903	945,451
Other assets:
Goodwill	6,636	6,636
Patents, trademarks and other intangible assets, net of accumulated amortization	64,915	67,713
Deferred tax assets, net	28	28
Other assets	18,230	19,921
Total other assets	89,809	94,298
Total assets	1,317,885	1,315,540
Current liabilities:
Trade accounts payable	51,142	45,889
Unearned income	16,773	13,879
Accrued liabilities	65,357	55,666
Decommissioning and other asset retirement obligations, net of current portion	809	1,451
Total current liabilities	134,081	116,885
Long-term debt, net of current portion	647,412	623,730
Deferred income taxes	7,133	7,296
Decommissioning and other asset retirement obligations, net	55,190	54,027
Preferred Units	67,636	77,062
Warranty Liability	6,982	18,503
Other liabilities	15,724	17,571
Total long-term liabilities	800,077	798,189
Equity:
Common stock, par value $0.01 per share	1,179	1,179
Additional paid-in capital	422,784	419,232
Treasury stock, at cost	(18,610)	(18,316)
Accumulated other comprehensive income (loss)	(45,940)	(51,285)
Retained earnings	(130,740)	(117,287)
Total TETRA stockholders' equity	228,673	233,523
Noncontrolling interests	155,054	166,943
Total equity	383,727	400,466
Total liabilities and equity	$ 1,317,885	$ 1,315,540