Acquisitions	3 Months Ended
Mar. 31, 2013
Acquisitions [Abstract]
Acquisitions	5. Acquisitions Datac/RealFlex On January 19, 2012, the Company completed the acquisition of Datac Instrumentation Limited ("Datac") and RealFlex Technologies Limited ("Realflex"). Datac, based in Dublin, Ireland, is a solutions company serving the oil and gas, power, water and waste water, and transportation and marine industries that provides systems integration for supervisory control and data acquisition ("SCADA"). RealFlex, also based in Dublin, provides real-time software packages for SCADA and process control applications. In connection with the Datac acquisition, the Company identified uncertain tax liabilities of the target company related to previous tax years. As a result, the Company entered into an agreement whereby the former owners funded an escrow account for $5.5 million dollars. In accordance with ASC 805, Business Combinations, the Company has identified an indemnification asset resulting from this agreement. The Datac and Realflex preliminary purchase price allocation has been finalized in the first quarter of 2013. The final valuation for Datac and Realflex did not result in material changes to the preliminary allocations. Zenith On February 29, 2012, the Company completed the acquisition of Zenith Oilfield Technology Ltd ("Zenith"). Zenith, based in Aberdeen, Scotland, is an international provider of innovative technology and products for the monitoring and analysis of down-hole data and related completion products for the oilfield artificial lift market. The Zenith preliminary purchase price allocation was finalized in the first quarter of 2013. The final valuation for Zenith did not result in material changes to the preliminary allocations. Other During 2012, the Company also acquired the assets of two businesses for aggregate consideration of $3.3 million. The two acquisitions were included in the Company's consolidated financial statements for the periods subsequent to the acquisitions. There have been no adjustments to the preliminary purchase allocations. Supplemental Pro Forma Data Proforma information for the Datac, Realflex, Zenith and other acquisitions are not material.

Acquisitions

3 Months Ended

Mar. 31, 2013

5. Acquisitions

Datac/RealFlex

On January 19, 2012, the Company completed the acquisition of Datac Instrumentation Limited ("Datac") and RealFlex Technologies Limited ("Realflex"). Datac, based in Dublin, Ireland, is a solutions company serving the oil and gas, power, water and waste water, and transportation and marine industries that provides systems integration for supervisory control and data acquisition ("SCADA"). RealFlex, also based in Dublin, provides real-time software packages for SCADA and process control applications.

In connection with the Datac acquisition, the Company identified uncertain tax liabilities of the target company related to previous tax years. As a result, the Company entered into an agreement whereby the former owners funded an escrow account for $5.5 million dollars. In accordance with ASC 805, Business Combinations, the Company has identified an indemnification asset resulting from this agreement.

The Datac and Realflex preliminary purchase price allocation has been finalized in the first quarter of 2013. The final valuation for Datac and Realflex did not result in material changes to the preliminary allocations.

Zenith

On February 29, 2012, the Company completed the acquisition of Zenith Oilfield Technology Ltd ("Zenith"). Zenith, based in Aberdeen, Scotland, is an international provider of innovative technology and products for the monitoring and analysis of down-hole data and related completion products for the oilfield artificial lift market.

The Zenith preliminary purchase price allocation was finalized in the first quarter of 2013. The final valuation for Zenith did not result in material changes to the preliminary allocations.

Other

During 2012, the Company also acquired the assets of two businesses for aggregate consideration of $3.3 million. The two acquisitions were included in the Company's consolidated financial statements for the periods subsequent to the acquisitions. There have been no adjustments to the preliminary purchase allocations.

Supplemental Pro Forma Data

Proforma information for the Datac, Realflex, Zenith and other acquisitions are not material.