Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 29,840	$ 23,057
Restricted cash	6,691	6,721
Trade accounts receivable, net of allowance for doubtful accounts of $7,847 in 2015 and $2,485 in 2014	114,284	184,172
Inventories	106,546	117,009
Assets held for sale	214	772
Prepaid expenses and other current assets	18,216	22,298
Total current assets	275,791	354,029
Property, plant, and equipment:
Land and building	78,929	79,462
Machinery and equipment	1,348,286	1,345,969
Automobiles and trucks	36,341	43,536
Chemical plants	182,951	181,014
Construction in progress	11,918	6,505
Total property, plant, and equipment	1,658,425	1,656,486
Less accumulated depreciation	(712,974)	(608,482)
Net property, plant, and equipment	945,451	1,048,004
Other assets:
Goodwill	6,636	112,945
Patents, trademarks, and other intangible assets, net of accumulated amortization of $44,695 in 2015 and $39,754 in 2014	67,713	86,375
Deferred tax assets	28	25
Other assets	19,921	34,824
Total other assets	94,298	234,169
Total assets	1,315,540	1,636,202
Current liabilities:
Trade accounts payable	45,889	62,114
Unearned income	13,879	27,542
Accrued liabilities	55,636	80,970
Current portion of long-term debt	30	50
Decommissioning and other asset retirement obligations, current	1,451	14,570
Total current liabilities	116,885	185,246
Long-term debt, net	623,730	853,228
Deferred income taxes	7,296	9,467
Decommissioning and other asset retirement obligations, net	54,027	42,879
CCLP Series A Preferred Units	77,062	0
Warranty Liability	18,503	0
Other liabilities	17,571	31,202
Total long-term and other liabilities	798,189	936,776
Equity:
Common stock, par value $.01 per share; 100,000,000 shares authorized; 83,013,971 shares issued at December 31, 2015, and 82,322,876 shares issued at December 31, 2014	1,179	830
Additional paid-in capital	419,232	256,184
Treasury stock, at cost; 2,766,958 shares held at December 31, 2015, and 2,672,930 shares held at December 31, 2014	(18,316)	(16,837)
Accumulated other comprehensive income (loss)	(51,285)	(43,135)
Retained earnings	(117,287)	44,175
Total TETRA stockholders' equity	233,523	241,217
Noncontrolling interest	166,943	272,963
Total equity	400,466	514,180
Total liabilities and equity	$ 1,315,540	$ 1,636,202