Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 25,833	$ 23,057
Restricted cash	6,686	6,721
Trade accounts receivable, net of allowances	109,724	184,172
Inventories	126,682	117,009
Assets held for sale	730	772
Prepaid expenses and other current assets	24,658	22,298
Total current assets	294,313	354,029
Property, plant, and equipment:
Land and building	79,519	79,462
Machinery and equipment	1,351,985	1,345,969
Automobiles and trucks	41,055	43,536
Chemical plants	184,020	181,014
Construction in progress	4,978	6,505
Total property, plant, and equipment	1,661,557	1,656,486
Less accumulated depreciation	(634,642)	(608,482)
Net property, plant, and equipment	1,026,915	1,048,004
Other assets:
Goodwill	6,636	112,945
Patents, trademarks and other intangible assets, net of accumulated amortization	73,622	86,375
Deferred tax assets, net	25	25
Other assets	35,793	34,824
Total other assets	116,076	234,169
Total assets	1,437,304	1,636,202
Current liabilities:
Trade accounts payable	46,191	62,114
Unearned income	22,689	27,542
Accrued liabilities	69,638	80,970
Current portion of long-term debt	0	50
Decommissioning and other asset retirement obligations, net of current portion	3,716	14,570
Total current liabilities	142,234	185,246
Long-term debt, net of current portion	841,366	853,228
Deferred income taxes	9,796	9,467
Decommissioning and other asset retirement obligations, net	50,875	42,879
Other liabilities	30,936	31,202
Total long-term liabilities	932,973	936,776
Equity:
Common stock, par value $0.01 per share	830	830
Additional paid-in capital	257,948	256,184
Treasury stock, at cost	(16,843)	(16,837)
Accumulated other comprehensive income (loss)	(42,164)	(43,135)
Retained earnings	(44,150)	44,175
Total TETRA stockholders' equity	155,621	241,217
Noncontrolling interests	206,476	272,963
Total equity	362,097	514,180
Total liabilities and equity	$ 1,437,304	$ 1,636,202