Significant Accounting Policies (Policies)	3 Months Ended
Mar. 31, 2012
Significant Accounting Policies [Policies]
Method of accounting for the purchase	TETRA will account for the purchase using the purchase method of accounting for business combinations.

Disclosure of accounting policy for business combinations and other business acquisition transactions not accounted for using the purchase method, such as an exchange of shares between entities under common control.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 9, 10, 11, 12, 13

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-URI http://asc.fasb.org/subtopic&trid=2303973

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18726-107790

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