XML 43 R30.htm IDEA: XBRL DOCUMENT v2.4.0.8
Organization and Significant Accounting Policies (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2013
unit
segment
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Revenues from external customers $ 109,338 $ 97,644 $ 93,668  
Treasury Stock, Shares, Acquired 99,531 9,126    
Disclosure on Geographic Areas, Revenue from External Customers Attributed to Foreign Countries 46,063 27,219 17,591  
Percentage Of Net Income, Foreign 42.00% 28.00% 19.00%  
Restricted Cash and Cash Equivalents 1,161      
Unbilled Contracts Receivable 10,693 10,970    
Number of Reportable Segments 2      
Number of Reporting Units 2      
Goodwill 21,051 21,051    
Finite-Lived Patents, Gross 1,273 1,026    
Amortization of Intangible Assets 839 898 912  
Depreciation 2,175 2,191 2,808  
Percentage of Shares Issued and Reserved for Share-based Payment Award 12.50%      
Stock Awards Available for Issuance Under the Incentive Plan (in shares) 671,000      
Options, Outstanding, Number (in shares) 1,688,500 1,914,000 1,902,000 2,856,125
Available-for-sale Securities, Fair Value Disclosure 30 44    
Treasury Stock, Value, Acquired, Cost Method 447 39    
Sales Revenue, Services, Net
       
Concentration Risk, Percentage 10.00% 10.00% 10.00%  
Number of Customers 2 1 2  
Accounts Receivable
       
Concentration Risk, Percentage 10.00% 10.00% 10.00%  
Number of Customers 0 0 0  
Capitalized Third-party Costs
       
Finite-Lived Patents, Gross 305 313    
Minimum
       
Standard Product Warranty Description (in years) 1 year      
Maximum
       
Standard Product Warranty Description (in years) 2 years      
Antidilutive
       
Options, Outstanding, Number (in shares) 1,623,000 1,507,000 1,368,000  
FUEL CHEM Segment
       
Revenues from external customers 36,786 35,203 42,738  
Goodwill 1,723 1,723    
FUEL CHEM Segment | Sales Revenue, Services, Net
       
Number of Customers 1   1  
APC Technology Segment
       
Goodwill 19,328 19,328    
APC Technology Segment | Sales Revenue, Services, Net
       
Concentration Risk, Percentage 14.00%      
Customer One | FUEL CHEM Segment | Sales Revenue, Services, Net
       
Concentration Risk, Percentage   16.00% 16.00%  
Customer Two | FUEL CHEM Segment
       
Concentration Risk, Percentage     13.00%  
Project and Non-Project
       
Unbilled Contracts Receivable $ 12,599 $ 15,661