Basis of Presentation (Policies)

6 Months Ended

Jun. 30, 2011

Cash Equivalents

Cash Equivalents

The Company considers all highly liquid investments with a maturity of three months or less when purchased to be cash equivalents. The carrying amounts reported in the balance sheet for cash equivalents approximate fair value.

Disposal or Impairment of Assets

Disposal or Impairment of Assets

During the three month period ended March 31, 2011, the Company recorded a $890 impairment of goodwill related to the Company’s geotechnical monitoring business and a $760 write-down of a 6% interest in an investment accounted for under the cost method, as a result of the sale of the business by majority shareholders.

Goodwill and Intangible Assets, Goodwill, Policy

In December 2010, the Financial Accounting Standards Board (“FASB”) issued authoritative guidance on application of goodwill impairment model when a reporting unit has a zero or negative carrying amount. When a reporting unit has a zero or negative carrying value, Step 2 of the goodwill impairment test should be performed if qualitative factors indicate that it is more likely than not that a goodwill impairment exists. The guidance is effective for the Company beginning in the first quarter of fiscal 2012. The Company is currently evaluating the potential impact, if any, of the adoption of this guidance on its consolidated financial statements.