Consolidated Balance Sheets (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 224,888	$ 65,360
Restricted cash	15,652	360
Trade accounts receivable, net of allowances for doubtful accounts of $2,422 in 2011 and $2,590 in 2010	161,631	162,405
Inventories	97,503	104,305
Derivative assets	0	2,436
Deferred tax asset	32,987	29,685
Oil and gas properties held for sale	6,101	0
Prepaid expenses and other current assets	26,469	50,387
Total current assets	565,231	414,938
Property, plant and equipment:
Land and building	76,900	79,368
Machinery and equipment	451,473	482,677
Automobiles and trucks	46,950	43,492
Chemical plants	157,587	176,853
Oil and gas producing assets (successful efforts method)	0	761,449
Construction in progress	96,496	15,677
Total property, plant, and equipment	829,406	1,559,516
Less accumulated depreciation and depletion	(295,576)	(819,646)
Net property, plant, and equipment	533,830	739,870
Other assets:
Goodwill	99,132	99,005
Patents, trademarks and other intangible assets, net of accumulated amortization of $22,040 in 2011 and $21,499 in 2010	12,537	13,024
Deferred tax assets	11	899
Other assets	33,741	31,892
Total other assets	145,421	144,820
Total assets	1,244,482	1,299,628
Current liabilities:
Trade accounts payable	47,794	55,555
Accrued liabilities	85,752	83,804
Decommissioning and other asset retirement obligations, current	109,029	72,265
Derivative liabilities	0	5,208
Total current liabilities	242,575	216,832
Long-term debt, net	305,035	305,035
Deferred income taxes	59,742	46,789
Decommissioning and other asset retirement obligations, net	24,566	200,550
Other liabilities	17,435	14,099
Total long-term liabilities	406,778	566,473
Equity:
Common stock, par value $0.01 per share; 100,000,000 shares authorized; 78,978,031 shares issued at September 30, 2011, and 77,825,398 shares issued at December 31, 2010	790	778
Additional paid-in capital	212,136	203,044
Treasury stock, at cost; 1,722,957 shares held at September 30, 2011, and 1,533,653 shares held at December 31, 2010	(9,963)	(8,382)
Accumulated other comprehensive income	351	1,107
Retained earnings	349,022	319,776
Total TETRA stockholders' equity	552,336	516,323
Noncontrolling interest	42,793	0
Total equity	595,129	516,323
Total liabilities and equity	$ 1,244,482	$ 1,299,628