Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 37,569	$ 38,754
Restricted cash	8,945	9,067
Trade accounts receivable, net of allowances for doubtful accounts of $1,440 in 2014 and $1,349 in 2013	179,888	180,659
Deferred tax asset	12,330	14,740
Inventories	92,686	100,792
Assets held for sale	2,536	5,541
Prepaid expenses and other current assets	22,382	24,386
Total current assets	356,336	373,939
Property, plant, and equipment:
Land and building	43,158	42,954
Machinery and equipment	713,570	682,836
Automobiles and trucks	56,235	57,588
Chemical plants	175,550	175,494
Construction in progress	32,310	14,170
Total property, plant, and equipment	1,020,823	973,042
Less accumulated depreciation	(435,538)	(400,426)
Net property, plant, and equipment	585,285	572,616
Other assets:
Goodwill	202,235	188,159
Patents, trademarks and other intangible assets, net of accumulated amortization of $29,801 in 2014 and $31,956 in 2013	55,855	31,980
Deferred tax assets	3,327	2,170
Other assets	25,228	37,669
Total other assets	286,645	259,978
Total assets	1,228,266	1,206,533
Current liabilities:
Trade accounts payable	88,671	69,220
Accrued liabilities	62,047	65,017
Current portion of long-term debt	90,000	89
Decommissioning and other asset retirement obligations, current	30,157	38,700
Total current liabilities	270,875	173,026
Long-term debt, net	327,052	387,727
Deferred income taxes	7,695	17,651
Decommissioning and other asset retirement obligations, net	12,031	12,204
Other liabilities	19,531	18,427
Total long-term liabilities	366,309	436,009
Equity:
Common stock, par value $0.01 per share; 100,000,000 shares authorized; 82,075,195 shares issued at June 30, 2014, and 81,333,631 shares issued at December 31, 2013	821	813
Additional paid-in capital	237,447	234,360
Treasury stock, at cost; 2,565,935 shares held at June 30, 2014, and 2,478,084 shares held at December 31, 2013	(16,132)	(15,765)
Accumulated other comprehensive income (loss)	(3,127)	(3,903)
Retained earnings	330,645	340,036
Total TETRA stockholders' equity	549,654	555,541
Noncontrolling interests	41,428	41,957
Total equity	591,082	597,498
Total liabilities and equity	$ 1,228,266	$ 1,206,533