Basis of Presentation (Policies)

6 Months Ended

Jun. 30, 2012

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 an $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 FASB issued authoritative guidance on application of the 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 adopted this guidance as of January 1, 2012. The adoption did not have a material impact on the Company’s financial position, results of operations or cash flows.