Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 25,478	$ 48,384
Restricted cash	11,481	8,721
Trade accounts receivable, net of allowances of $6,800 in 2015 and $2,485 in 2014	203,768	226,966
Deferred tax asset, net	536	392
Inventories	145,457	189,357
Assets held for sale	0	2,568
Prepaid expenses and other current assets	24,305	24,463
Total current assets	411,025	500,851
Property, plant, and equipment:
Land and building	79,062	75,200
Machinery and equipment	1,373,469	1,292,734
Automobiles and trucks	47,307	57,035
Chemical plants	181,155	174,108
Construction in progress	6,573	21,483
Total property, plant, and equipment	1,687,566	1,620,560
Less accumulated depreciation	(581,756)	(496,368)
Net property, plant, and equipment	1,105,810	1,124,192
Other assets:
Goodwill	292,157	293,866
Patents, trademarks and other intangible assets, net of accumulated amortization of $48,951 in 2015 and $39,754 in 2014	95,881	107,167
Deferred tax assets, net	1,209	1,791
Other assets	35,231	40,966
Total other assets	424,478	443,790
Total assets	1,941,313	2,068,833
Current liabilities:
Trade accounts payable	56,589	119,240
Unearned income	31,084	70,688
Accrued liabilities	92,025	86,881
Current portion of long-term debt	90,425	90,074
Decommissioning and other asset retirement obligations, net of current portion	17,912	12,758
Total current liabilities	288,035	379,641
Long-term debt, net of current portion	829,049	844,961
Deferred income taxes	11,474	10,525
Decommissioning and other asset retirement obligations, net	42,064	49,983
Other liabilities	17,495	18,122
Total long-term liabilities	900,082	923,591
Equity:
Common stock, par value $0.01 per share; 100,000,000 shares authorized; 82,976,740 shares issued at Sept. 30, 2015, and 82,322,876 shares issued at December 31, 2014	829	823
Additional paid-in capital	247,232	241,166
Treasury stock, at cost; 2,732,259 shares held at Sept. 30, 2015, and 2,672,930 shares held at December 31, 2014	(16,669)	(16,419)
Accumulated other comprehensive income (loss)	(40,271)	(26,215)
Retained earnings	190,591	170,358
Total TETRA stockholders' equity	381,712	369,713
Noncontrolling interests	371,484	395,888
Total equity	753,196	765,601
Total liabilities and equity	$ 1,941,313	$ 2,068,833