Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenues:
Product sales	$ 71,538	$ 67,229
Services and rentals	137,021	113,567
Total revenues	208,559	180,796
Cost of revenues:
Cost of product sales	55,738	50,490
Cost of services and rentals	94,464	80,578
Depreciation, amortization, and accretion	19,671	17,333
Total cost of revenues	169,873	148,401
Gross profit	38,686	32,395
General and administrative expense	33,554	30,891
Interest expense, net	4,200	4,151
Other (income) expense, net	(2,279)	(4,399)
Income before taxes and discontinued operations	3,211	1,752
Provision for income taxes	1,111	604
Income before discontinued operations	2,100	1,148
Income (loss) from discontinued operations, net of taxes	0	(1)
Net income	2,100	1,147
Net (income) loss attributable to noncontrolling interest	(797)	(466)
Net income attributable to TETRA stockholders	$ 1,303	$ 681
Basic net income per common share:
Income before discontinued operations attributable to TETRA stockholders	$ 0.02	$ 0.01
Income (loss) from discontinued operations attributable to TETRA stockholders	$ 0	$ 0
Net income attributable to TETRA stockholders	$ 0.02	$ 0.01
Average shares outstanding	77,671	77,069
Diluted net income per common share:
Income before discontinued operations attributable to TETRA stockholders	$ 0.02	$ 0.01
Income (loss) from discontinued operations attributable to TETRA stockholders	$ 0	$ 0
Net income attributable to TETRA stockholders	$ 0.02	$ 0.01
Average diluted shares outstanding	78,395	78,281