Accounts Payable Current Accounts payable Accrued Liabilities Current Accrued expenses Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax Cumulative translation adjustments Additional Paid In Capital Additional paid-in capital Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] Adjustments to reconcile net loss to net cash provided by (used in) operating activities : Amendment Flag Amendment Flag Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount Conversion of stock options and unvested restricted shares excluded from computation of earnings per share Arrangements And Nonarrangement Transactions [Member] Arrangements and Non-arrangement Transactions [Domain] Assets Total assets Assets [Abstract] ASSETS Assets Current Total current assets Assets Current [Abstract] Current Assets : Assets Held For Sale At Carrying Value Total assets Assets Held For Sale Current Current assets held for sale Assets Held For Sale Long Lived Non-current assets held for sale Assets Held For Sale Other Noncurrent Intangible assets, net Assets Held For Sale Property Plant And Equipment Property and equipment, net Award Type [Axis] Award Type [Axis] Basis Of Accounting Policy Policy [Text Block] Basis of Presentation and Interim Financial Statements Capital Lease Obligations Incurred Capital lease obligations Cash And Cash Equivalents At Carrying Value Cash and Cash Equivalents, End of Period Cash and Cash Equivalents, Beginning of Period Cash and cash equivalents Cash And Cash Equivalents Period Increase Decrease Net decrease in Cash and Cash Equivalents Collaborative Arrangement Expected Service Revenue Collaborative Arrangement Expected Service Revenue Collaboration agreements, total amount Collaborative Arrangement [Member] Collaborative Arrangement Collaborative Arrangement Revenues Collaborative Arrangement Revenues Collaboration agreements, revenue recognized Common Stock Par Or Stated Value Per Share Common stock, par value Common Stock Shares Authorized Common stock, shares authorized Common Stock Shares Issued Common stock, shares issued Common Stock Value Common stock, $.01 par value, 50,000,000 shares authorized, 21,389,259 and 21,000,960 issued at September 30, 2012 and December 31, 2011, respectively Comprehensive Income Net Of Tax Comprehensive loss Cost Of Goods And Services Sold Cost of sales Cost Of Services Direct Materials Collaboration agreements, materials supplied Covenant Requirements Debt Service Coverage Ratio Covenant Requirements Debt Service Coverage Ratio Financial covenants, debt coverage ratio Current Fiscal Year End Date Current Fiscal Year End Date Debt Instrument [Line Items] Debt Instrument [Line Items] Debt Instrument [Table] Schedule of Long-term Debt Instruments [Table] Deferred Compensation Arrangement With Individual Share Based Payments By Title Of Individual [Axis] Title of Individual [Axis] Deferred Income Tax Expense Benefit Deferred income tax provision Deferred Revenue Current Deferred revenue Deferred Tax Assets Net Noncurrent Deferred tax asset Depreciation Depletion And Amortization Depreciation and amortization Disclosure - Activity of Outstanding Stock Options [Abstract] Disclosure Activity Of Outstanding Stock Options [Abstract] Disclosure - Activity of Outstanding Stock Options [Abstract] Disclosure - Additional Information About Stock Options Outstanding and Exercisable [Abstract] Disclosure Additional Information About Stock Options Outstanding And Exercisable [Abstract] Disclosure - Additional Information About Stock Options Outstanding and Exercisable [Abstract] Disclosure - Basic and Diluted Loss Per Share - Additional Information [Abstract] Disclosure Basic And Diluted Loss Per Share Additional Information [Abstract] Disclosure - Basic and Diluted Loss Per Share - Additional Information [Abstract] Disclosure - Components of Assets Held for Sale [Abstract] Disclosure Components Of Assets Held For Sale [Abstract] Disclosure - Components of Assets Held for Sale [Abstract] Disclosure - Debt - Additional Information [Abstract] Disclosure Debt Additional Information [Abstract] Disclosure - Debt - Additional Information [Abstract] Disclosure - Description of Business and Summary of Significant Accounting Policies - Additional Information [Abstract] Disclosure Description Of Business And Summary Of Significant Accounting Policies Additional Information [Abstract] Disclosure - Description of Business and Summary of Significant Accounting Policies - Additional Information [Abstract] Disclosure - Discontinued Operations - Additional Information [Abstract] Disclosure Discontinued Operations Additional Information [Abstract] Disclosure - Discontinued Operations - Additional Information [Abstract] Disclosure - Income Taxes - Additional Information [Abstract] Disclosure Income Taxes Additional Information [Abstract] Disclosure - Income Taxes - Additional Information [Abstract] Disclosure - Intangible Assets [Abstract] Disclosure Intangible Assets [Abstract] Disclosure - Intangible Assets [Abstract] Disclosure - Inventories [Abstract] Disclosure Inventories [Abstract] Disclosure - Inventories [Abstract] Disclosure Of Compensation Related Costs Share Based Payments [Text Block] SHARE-BASED COMPENSATION Disclosure - Operating Results of Discontinued Operation [Abstract] Disclosure Operating Results Of Discontinued Operation [Abstract] Disclosure - Operating Results of Discontinued Operation [Abstract] Disclosure - Share Based Compensation - Additional Information [Abstract] Disclosure Share Based Compensation Additional Information [Abstract] Disclosure - Share Based Compensation - Additional Information [Abstract] Disclosure - Share Based Compensation Expense [Abstract] Disclosure Share Based Compensation Expense [Abstract] Disclosure - Share Based Compensation Expense [Abstract] Disclosure - Status of Unvested Restricted Stock Activity [Abstract] Disclosure Status Of Unvested Restricted Stock Activity [Abstract] Disclosure - Status of Unvested Restricted Stock Activity [Abstract] Disclosure - Weighted Average Number of Shares Used in Computing Basic and Diluted Loss Per Share [Abstract] Disclosure Weighted Average Number Of Shares Used In Computing Basic And Diluted Loss Per Share [Abstract] Disclosure - Weighted Average Number of Shares Used in Computing Basic and Diluted Loss Per Share [Abstract] Discontinued Operation Gain Loss From Disposal Of Discontinued Operation Before Income Tax Expected gain on sale of held for sale assets Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax Gain on sale of discontinued operations Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax Income from discontinued operations Income from discontinued operations Disposal Group Including Discontinued Operation Costs Of Goods Sold Cost of sales Disposal Group, Including Discontinued Operation, Expenses [Abstract] Disposal Group Including Discontinued Operation Expenses [Abstract] Operating expenses: Disposal Group Including Discontinued Operation Gross Profit Loss Gross profit Disposal Group Including Discontinued Operation Interest Expense Income tax expense Disposal Group Including Discontinued Operation Operating Expense Total operating expenses Disposal Group Including Discontinued Operation Operating Income Loss Operating income Disposal Group Including Discontinued Operation Research And Development Expense Disposal Group Including Discontinued Operation Research And Development Expense Research and development Disposal Group Including Discontinued Operation Revenue Revenues Disposal Group Including Discontinued Operation Selling General And Administrative Expense Disposal Group Including Discontinued Operation Selling General And Administrative Expense Selling, general and administrative Disposal Groups Including Discontinued Operations Disclosure [Text Block] DISCONTINUED OPERATIONS Disposal Groups Including Discontinued Operations Name [Domain] Disposal Groups, Including Discontinued Operations, Name [Domain] Document - Document and Entity Information [Abstract] Document Documentand Entity Information [Abstract] Document - Document and Entity Information [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus Document Fiscal Year Focus Document Fiscal Year Focus Document Information [Line Items] Document Information [Line Items] Document Period End Date Document Period End Date Document Type Document Type Earnings Per Share Basic Basic net loss per share Earnings Per Share Diluted Diluted net loss per share Earnings Per Share Disclosure [Line Items] Earnings Per Share Disclosure [Line Items] Earnings Per Share Disclosure [Line Items] Earnings Per Share Disclosure [Table] Earnings Per Share Disclosure [Table] Earnings Per Share Disclosure [Table] Earnings Per Share [Text Block] BASIC AND DILUTED LOSS PER SHARE Effect Of Exchange Rate On Cash And Cash Equivalents Effect of exchange rate changes on cash Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Employee Stock Purchase Plan [Member] Employee Stock Purchase Plan [Member] Employee Stock Purchase Plan Entities [Table] Entities [Table] Entity Central Index Key Entity Central Index Key Entity Common Stock Shares Outstanding Entity Common Stock, Shares Outstanding Entity [Domain] Entity [Domain] Entity Filer Category Entity Filer Category Entity Registrant Name Entity Registrant Name Financial Covenant Liquidity Amount Financial Covenant Liquidity Amount Financial covenants, minimum liquidity Finite Lived Intangible Assets Accumulated Amortization Accumulated amortization Finite Lived Intangible Assets Gross Intangible assets Finite Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Finite Lived Intangible Asset Useful Life Intangible assets lives Food Safety And Ag Gmo Product Assets [Member] Food Safety And Ag Gmo Product Assets [Member] Food Safety and Ag/GMO Products Gross Profit Gross profit Income Loss From Continuing Operations Loss from continuing operations Loss from continuing operations, net of taxes Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments Loss from continuing operations before taxes Income Loss From Continuing Operations Per Basic Share Basic loss per share from continuing operations Income Loss From Continuing Operations Per Diluted Share Diluted loss per share from continuing operations Income Loss From Discontinued Operations Net Of Tax Add: Income from discontinued operations Income Loss From Discontinued Operations Net Of Tax Per Basic Share Basic income per share from discontinued operations Income Loss From Discontinued Operations Net Of Tax Per Diluted Share Diluted income per share from discontinued operations Income Statement [Abstract] Income Statement [Abstract] Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Axis] Disposal Group Name [Axis] Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Table] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Table] Income Tax Disclosure [Text Block] INCOME TAXES Income Taxes [Line Items] Income Taxes [Line Items] Income Taxes [Line Items] Income Taxes Paid Net Cash paid for taxes, net of tax refunds Income Taxes [Table] Income Taxes [Table] Income Taxes [Table] Income Tax Expense Benefit Income tax expense Increase Decrease In Accounts Payable Accounts payable Increase Decrease In Accrued Liabilities Accrued expenses Increase Decrease In Deferred Revenue Deferred revenue Increase Decrease In Inventories Inventories Increase Decrease In Operating Assets [Abstract] (Increase) decrease in : Increase Decrease In Operating Liabilities [Abstract] Increase (decrease) in : Increase Decrease In Other Current Assets Other current assets Increase Decrease In Other Noncurrent Assets Other assets Increase Decrease In Receivables Receivables Intangible Assets Disclosure [Text Block] INTANGIBLE ASSETS Intangible Assets Net Excluding Goodwill Intangible assets, net Net intangible assets Interest Income Expense Nonoperating Net Interest expense, net Interest Paid Net Cash paid for interest Inventories Property Held For Sale Current Inventories Inventory Disclosure [Text Block] INVENTORIES Inventory Finished Goods Net Of Reserves Finished goods Inventory Net Inventories Inventories Inventory Raw Materials Net Of Reserves Raw materials Inventory Work In Process Net Of Reserves Work in progress Lease Agreement Buyout Option Lease Agreement Buyout Option Leases buyout at lease end Lease Term Lease Term Lease term Legal Entity [Axis] Legal Entity [Axis] Liabilities And Stockholders Equity Total liabilities and stockholders' equity Liabilities And Stockholders Equity [Abstract] LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities Current Total current liabilities Liabilities Current [Abstract] Current Liabilities : Line Of Credit Facility Amount Outstanding Revolving line of credit, outstanding Line Of Credit Facility Maximum Borrowing Capacity Revolving line of credit Long Term Debt Current Current portion of debt Long Term Debt Noncurrent Long-term debt Long Term Debt [Text Block] DEBT Maximum [Member] Maximum Minimum [Member] Minimum Minimum Net Worth Required For Compliance Financial covenants, tangible net worth Nature of Operations [Policy Text Block] Nature Of Operations Policy [Text Block] Business Net Cash Provided By Used In Financing Activities Net cash provided by (used in) financing activities Net Cash Provided By Used In Financing Activities [Abstract] Cash Flows from Financing Activities : Net Cash Provided By Used In Investing Activities Net cash used in investing activities Net Cash Provided By Used In Investing Activities [Abstract] Cash Flows from Investing Activities : Net Cash Provided By Used In Operating Activities Net cash used in operating activities Net Cash Provided By Used In Operating Activities [Abstract] Cash Flows from Operating Activities : Net Income Loss Net loss Net loss New Accounting Pronouncements Policy Policy [Text Block] New and Recently Adopted Accounting Standards Non Employee Stock Options[Member] Non Employee Stock Options [Member] Non Employee Stock Options Nonqualified Stock Options [Member] Nonqualified Stock Options [Member] Nonqualified Stock Options Number Of Facilities Leased Number Of Facilities Leased Number of leases Operating Expenses Total operating expenses Operating Expenses [Abstract] Operating expenses: Operating Income Loss Operating loss Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] Organization, Consolidation and Presentation of Financial Statements Disclosure [Table] Organization Consolidation And Presentation Of Financial Statements Disclosure [Table] Organization, Consolidation and Presentation of Financial Statements Disclosure [Table] Organization Consolidation Basis Of Presentation Business Description And Accounting Policies [Text Block] DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Other Assets Current Other current assets Other Assets Noncurrent Other assets Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax Foreign currency translation adjustment Other Cost Of Services Collaboration agreements, consulting services provided Payments To Acquire Property Plant And Equipment Purchase of property and equipment Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] Preferred Stock Par Or Stated Value Per Share Preferred stock, par value Preferred Stock Shares Authorized Preferred stock, shares authorized Preferred Stock Shares Issued Preferred stock, shares issued Preferred Stock Shares Outstanding Preferred stock, shares outstanding Preferred Stock Value Preferred stock, $.01 par value, 20,920,648 shares authorized, no shares issued or outstanding Proceeds From Divestiture Of Businesses Net Of Cash Divested Proceed from the sale of discontinued operations, net of transaction fees Proceeds From Employee Stock Purchase Program Proceeds From Employee Stock Purchase Program Proceeds from employee stock purchase plan Proceeds From Lines Of Credit Revolving line of credit, borrowed Proceeds From Repayments Of Restricted Cash Financing Activities Restricted cash requirement Proceeds From Stock Options Exercised Proceeds from stock option exercises Proceeds from the exercise of stock options Proceeds From Stock Plans Proceeds from employee stock purchase plan Project Completion Period Project Completion Period Standard project completion period Property Plant And Equipment Net Property and equipment, net Range 10 [Member] Range 10 [Member] Expected to vest as of June 30, 2012 Range 1 Range 1 [Member] Range 1 Range 2 Range 2 [Member] Range 2 Range 3 Range 3 [Member] Range 3 Range 4 Range 4 [Member] Range 4 Range 5 Range 5 [Member] Balance, January 1, 2012 Range 6 Range 6 [Member] Granted Range 7 Range 7 [Member] Cancelled / Forfeited Range 8 Range 8 [Member] Balance, June 30, 2012 Range 9 [Member] Range 9 [Member] Vested and exercisable at June 30, 2012 Range [Axis] Range [Axis] Range [Member] Range [Domain] Receivables Net Current Receivables, net Repayments Of Debt Repayments on financing obligations Research And Development Expense Research and development Restricted Cash And Cash Equivalents At Carrying Value Restricted cash Restricted Stock [Member] Restricted stock Restricted Stock Units R S U [Member] Restricted Stock Units (RSUs) Retained Earnings Accumulated Deficit Accumulated deficit Revenue Recognition Policy [Text Block] Revenue Recognition Revenues Revenues Sale Leaseback Transaction Imputed Interest Rate lease, Imputed interest rate Scenario One [Member] Scenario One [Member] For stockholders owning more than 10% of the Company's common stock Scenario Unspecified [Domain] Scenario, Unspecified [Domain] Schedule Of Compensation Cost For Share Based Payment Arrangements Allocation Of Share Based Compensation Costs By Plan Table [Text Block] Share Based Compensation Expense Schedule Of Disposal Groups Including Discontinued Operations Income Statement Balance Sheet And Additional Disclosures [Text Block] Operating Results of Discontinued Operation Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Table] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Schedule Of Finite Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Schedule Of Finite Lived Intangible Assets Table [Text Block] Intangible Assets Schedule Of Inventory Current Table [Text Block] Inventories Schedule of Inventory [Line Items] Schedule Of Inventory [Line Items] Schedule of Inventory [Line Items] Schedule of Inventory [Table] Schedule Of Inventory [Table] Schedule of Inventory [Table] Schedule Of Other Assets Table [Text Block] Components of Assets Held for Sale Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule Of Sharebased Compensation Restricted Stock And Restricted Stock Units Activity Table [Text Block] Status of Unvested Restricted Stock Activity Schedule Of Share Based Compensation Shares Authorized Under Stock Option Plans By Exercise Price Range [Table] Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table] Schedule Of Share Based Compensation Shares Authorized Under Stock Option Plans By Exercise Price Range [Text Block] Additional Information About Stock Options Outstanding and Exercisable Schedule Of Share Based Compensation Stock Options Activity Table [Text Block] Activity of Outstanding Stock Options Granted Schedule of Weighted Average Number of Shares Outstanding [Table] Schedule Of Weighted Average Number Of Shares Outstanding [Table] Schedule of Weighted Average Number of Shares Outstanding [Table] Schedule Of Weighted Average Number Of Shares Table [Text Block] Weighted Average Number of Shares Segment Discontinued Operations [Member] Segment, Discontinued Operations Selling General And Administrative Expense Selling, general and administrative Share Based Compensation Share-based compensation expense Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period 1 Restricted stock granted, vest periods Share Based Compensation Arrangement By Share Based Payment Award Discount From Market Price Offering Date Purchase price as a percentage of fair market value at date of grant Share Based Compensation Arrangement By Share Based Payment Award Discount From Market Price Purchase Date Employee Stock Purchase Plan, purchase price as percentage of fair market value of a share of common stock on first or last day of quarter Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Expected to Vest, Number Sharebased Compensation Arrangement By Sharebased Payment Award Equity Instruments Other Than Options Expected To Vest Number Expected to vest at September 30, 2012 Share based Compensation Arrangement by Share based Payment Award, Equity Instruments Other than Options, Expected to Vest, Total Intrinsic Value Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Expected To Vest Total Intrinsic Value Expected to vest at September 30, 2012 Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Expected to Vest, Weighted Average Grant Date Fair Value Sharebased Compensation Arrangement By Sharebased Payment Award Equity Instruments Other Than Options Expected To Vest Weighted Average Grant Date Fair Value Expected to vest at September 30, 2012 Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period Forfeited during the period Cancelled / forfeited Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value Cancelled / forfeited Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Granted Granted during the period Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value Granted Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Intrinsic Value [Roll Forward] Aggregate Intrinsic Value Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number Ending Balance Beginning Balance Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested [Roll Forward] Shares Share based Compensation Arrangement by Share based Payment Award, Equity Instruments Other than Options, Nonvested, Total Intrinsic Value Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Total Intrinsic Value Non-vested RSA's at September 30, 2012 Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value Ending Balance Beginning Balance Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value [Roll Forward] Weighted Average Grant Date Fair Value Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Outstanding Weighted Average Remaining Contractual Terms Weighted average remaining term of non-vested restricted stock Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Vested Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value Vested Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vesting Percentage One Year After Performance Condition Achieved Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vesting Percentage One Year After Performance Condition Achieved Percentage of RSUs vest upon achievement of certain revenue growth during any 12-month period prior to December 31, 2012 Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate Fair value assumptions used in Black-Scholes model, dividend yield Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term 1 Fair value assumptions used in Black-Scholes model, expected life Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Fair value assumptions used in Black-Scholes model, expected volatility Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Fair value assumptions used in Black-Scholes model, risk free interest rate Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized Maximum number of issuable common stock under the plan Share-based Compensation Arrangement by Share-based Payment Award, Options, Aggregate Intrinsic Value [Abstract] Share Based Compensation Arrangement By Share Based Payment Award Options Aggregate Intrinsic Value [Abstract] Aggregate Instrinsic Value Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value 1 Vested and excercisable at September 30, 2012 Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number Vested and excercisable at September 30, 2012 Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term 1 Vested and excercisable at September 30, 2012 Share Based Compensation Arrangement By Share Based Payment Award, Options, Expected To Vest, Aggregate Intrinsic Value Share Based Compensation Arrangement By Share Based Payment Award Options Expected To Vest Aggregate Intrinsic Value Expected to vest as of September 30, 2012 Share Based Compensation Arrangement By Share Based Payment Award Options Expected To Vest Outstanding Number Share Based Compensation Arrangement By Share Based Payment Award Options Expected To Vest Outstanding Number Expected to vest as of September 30, 2012 Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Expected to Vest, Weighted Average Remaining Contractual Term 1 Share Based Compensation Arrangement By Share Based Payment Award Options Expected To Vest Weighted Average Remaining Contractual Term 1 Expected to vest as of September 30, 2012 Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period Cancelled / Forfeited Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Granted Number of options granted Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value Weighted average grant date fair value of options granted Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value Balance, September 30, 2012 Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number Ending Balance Beginning Balance Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding [Roll Forward] Number of Shares Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term 2 Balance, September 30, 2012 Share-based Compensation Arrangement by Share-based Payment Award, Options, Weighted Average Remaining Contractual Term [Abstract] Share Based Compensation Arrangement By Share Based Payment Award Options Weighted Average Remaining Contractual Term [Abstract] Weighted Average Remaining Contractual Term Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain] Award Type [Domain] Share Based Compensation Shares Authorized Under Stock Option Plans By Exercise Price Range [Axis] Exercise Price Range [Axis] Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Domain] Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Domain] Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Exercise Price 1 Options Exercisable, Wtd. Average Exercise Price Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items] Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Lower Range Limit Lower Limit Price range, lower limit Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options Options Exercisable, Number of Shares Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Outstanding Options Options Outstanding, Number of Shares Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Exercise Price Beginning Balance 1 Options Outstanding, Weighted Average Exercise Price Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Remaining Contractual Term 2 Options Outstanding, Weighted Average Remaining Contractual Life Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Upper Range Limit Price range, upper limit Upper Limit Statement [Line Items] Statement [Line Items] Statement Of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Statement Of Financial Position [Abstract] Statement of Financial Position [Abstract] Statement Of Income And Comprehensive Income [Abstract] Statement of Other Comprehensive Income [Abstract] Statement Scenario [Axis] Scenario [Axis] Statement [Table] Statement [Table] Stockholders Equity Total stockholders' equity Stockholders Equity [Abstract] Stockholders' Equity: Stockholders [Member] Stockholders [Member] stockholders owning more than 10% of common stock Stock Option Plan Two Thousand [Member] Stock Option Plan Two Thousand [Member] 2000 Plan Stock Options [Member] Stock Options Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Supplemental Cash Flow Information [Abstract] Supplemental Cash Flow Disclosure : Technology Services Costs Collaboration agreements, technology access fees Title Of Individual With Relationship To Entity [Domain] Title of Individual with Relationship to Entity [Domain] Trading Symbol Trading Symbol Treasury Stock Shares Treasury stock, common shares Treasury Stock Value Treasury stock, 406,627 common shares at cost at September 30, 2012 and December 31, 2011 Type Of Arrangement [Axis] Type of Arrangement and Non-arrangement Transactions [Axis] Generic abstract to contain tags that are not otherwise categorized. Uncategorized [Abstract] Uncategorized [Abstract] Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions Increase in unrecognized tax benefits, if recognized, would affect the effective tax rate Unrecognized Tax Benefits That Would Impact Effective Tax Rate Unrecognized tax benefits, which if recognized in a period where there was not a full valuation allowance would affect the effective tax rate Use Of Estimates Use of Estimates Water And Environmental Products Assets [Member] Water And Environmental Products Assets [Member] Water and Environmental Products Assets Weighted Average Number Diluted Shares Outstanding Adjustment Dilutive effect of stock options and unvested restricted shares Weighted Average Number Of Diluted Shares Outstanding Shares used in computing diluted net loss per share Shares used in computing diluted loss per share Weighted Average Number Of Shares Issued Basic Weighted average common shares outstanding Weighted Average Number Of Shares Outstanding Basic Shares used in computing basic net loss per share Shares used in computing basic loss per share Weighted Average Number of Shares Outstanding [Line Items] Weighted Average Number Of Shares Outstanding [Line Items] Weighted Average Number of Shares Outstanding [Line Items]