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Note 3 - Supplemental Balance Sheet Information (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Estimated Costs To Complete Construction In Progress $ 1,154 $ 1,032
Depreciation 3,306 3,629
Number of Reportable Segments 3  
Amortization of Intangible Assets $ 497 $ 627
Reporting Units Analyzed [Member]
   
Number of Reportable Segments 2  
Subject To Income Approach Analysis [Member]
   
Number of Reportable Segments 1