<?xml version="1.0" encoding="us-ascii"?><InstanceReport xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><Version>2.4.0.8</Version><ReportLongName>115 - Disclosure - Debt</ReportLongName><DisplayLabelColumn>true</DisplayLabelColumn><ShowElementNames>false</ShowElementNames><RoundingOption /><HasEmbeddedReports>false</HasEmbeddedReports><Columns><Column FlagID="0"><Id>1</Id><IsAbstractGroupTitle>false</IsAbstractGroupTitle><LabelSeparator>

</LabelSeparator><CurrencyCode /><FootnoteIndexer /><hasSegments>false</hasSegments><hasScenarios>false</hasScenarios><MCU><KeyName /><CurrencySymbol /><contextRef><ContextID>cx_01_January_2013_TO_30_June_2013</ContextID><EntitySchema>http://www.sec.gov/CIK</EntitySchema><EntityValue>0000849145</EntityValue><PeriodDisplayName /><PeriodType>duration</PeriodType><PeriodStartDate>2013-01-01T00:00:00</PeriodStartDate><PeriodEndDate>2013-06-30T00:00:00</PeriodEndDate><Segments /><Scenarios /></contextRef><UPS /><CurrencyCode /><OriginalCurrencyCode /></MCU><CurrencySymbol /><Labels><Label Key="CalendarSupplement" Id="0" Label="6 Months Ended" /><Label Key="Calendar" Id="1" Label="Jun. 30, 2013" /></Labels></Column></Columns><Rows><Row FlagID="0"><Id>1</Id><IsAbstractGroupTitle>false</IsAbstractGroupTitle><LabelSeparator>

</LabelSeparator><Level>4</Level><ElementName>us-gaap_DebtDisclosureTextBlock</ElementName><ElementPrefix>us-gaap_</ElementPrefix><IsBaseElement>true</IsBaseElement><BalanceType>na</BalanceType><PeriodType>duration</PeriodType><IsReportTitle>false</IsReportTitle><IsSegmentTitle>false</IsSegmentTitle><IsCalendarTitle>false</IsCalendarTitle><IsEquityPrevioslyReportedAsRow>false</IsEquityPrevioslyReportedAsRow><IsEquityAdjustmentRow>false</IsEquityAdjustmentRow><IsBeginningBalance>false</IsBeginningBalance><IsEndingBalance>false</IsEndingBalance><IsReverseSign>false</IsReverseSign><FootnoteIndexer /><Cells><Cell FlagID="0" ContextID="cx_01_January_2013_TO_30_June_2013" UnitID=""><Id>1</Id><IsNumeric>false</IsNumeric><IsRatio>false</IsRatio><DisplayZeroAsNone>false</DisplayZeroAsNone><NumericAmount>0</NumericAmount><RoundedNumericAmount>0</RoundedNumericAmount><NonNumbericText>&lt;p align="justify" style="font-family: times new roman,times,serif; font-size: 10pt;"&gt;
      &lt;b&gt;Note 8 &amp;#8211; Debt&lt;/b&gt;
    &lt;/p&gt;
    &lt;div align="center"&gt;
                  &lt;table border="0" cellpadding="0" cellspacing="0" style="border-color: black; font-size: 10pt; border-collapse: collapse; font-family: times new roman,times,serif;" width="80%"&gt;
              &lt;tr valign="top"&gt;
                &lt;td align="left"&gt;&amp;#160;&lt;/td&gt;
                &lt;td align="left" width="1%"&gt;&amp;#160;&lt;/td&gt;
                &lt;td align="center" width="17%"&gt;
                  &lt;u&gt;
                    &lt;b&gt;June 30,&lt;/b&gt;
                  &lt;/u&gt;
                &lt;/td&gt;
                &lt;td align="center" width="2%"&gt;&amp;#160;&lt;/td&gt;
                &lt;td align="center" width="1%"&gt;&amp;#160;&lt;/td&gt;
                &lt;td align="center" width="17%"&gt;
                  &lt;u&gt;
                    &lt;b&gt;December 31,&lt;/b&gt;
                  &lt;/u&gt;
                &lt;/td&gt;
                &lt;td align="left" width="2%"&gt;&amp;#160;&lt;/td&gt;
              &lt;/tr&gt;
              &lt;tr valign="top"&gt;
                &lt;td align="left"&gt;&amp;#160;&lt;/td&gt;
                &lt;td align="left" width="1%"&gt;&amp;#160;&lt;/td&gt;
                &lt;td align="center" width="17%"&gt;
                  &lt;u&gt;
                    &lt;b&gt;2013&lt;/b&gt;
                  &lt;/u&gt;
                &lt;/td&gt;
                &lt;td align="center" width="2%"&gt;&amp;#160;&lt;/td&gt;
                &lt;td align="center" width="1%"&gt;&amp;#160;&lt;/td&gt;
                &lt;td align="center" width="17%"&gt;
                  &lt;u&gt;
                    &lt;b&gt;2012&lt;/b&gt;
                  &lt;/u&gt;
                &lt;/td&gt;
                &lt;td align="left" width="2%"&gt;&amp;#160;&lt;/td&gt;
              &lt;/tr&gt;
              &lt;tr&gt;
                &lt;td&gt;&amp;#160;&lt;/td&gt;
                &lt;td width="1%"&gt;&amp;#160;&lt;/td&gt;
                &lt;td width="17%"&gt;&amp;#160;&lt;/td&gt;
                &lt;td width="2%"&gt;&amp;#160;&lt;/td&gt;
                &lt;td width="1%"&gt;&amp;#160;&lt;/td&gt;
                &lt;td width="17%"&gt;&amp;#160;&lt;/td&gt;
                &lt;td width="2%"&gt;&amp;#160;&lt;/td&gt;
              &lt;/tr&gt;
              &lt;tr valign="top"&gt;
                &lt;td align="left" bgcolor="#e6efff"&gt;Credit Facility&lt;/td&gt;
                &lt;td align="left" bgcolor="#e6efff" width="1%"&gt;$&lt;/td&gt;
                &lt;td align="right" bgcolor="#e6efff" width="17%"&gt;
                  3,922
                &lt;/td&gt;
                &lt;td align="left" bgcolor="#e6efff" width="2%"&gt;&amp;#160;&lt;/td&gt;
                &lt;td align="left" bgcolor="#e6efff" width="1%"&gt;$&lt;/td&gt;
                &lt;td align="right" bgcolor="#e6efff" width="17%"&gt;
                  10,883
                &lt;/td&gt;
                &lt;td align="left" bgcolor="#e6efff" width="2%"&gt;&amp;#160;&lt;/td&gt;
              &lt;/tr&gt;
              &lt;tr valign="top"&gt;
                &lt;td align="left"&gt;Counsel Loan&lt;/td&gt;
                &lt;td align="left" style="BORDER-BOTTOM: #000000 1px solid" width="1%"&gt;&amp;#160;&lt;/td&gt;
                &lt;td align="right" style="BORDER-BOTTOM: #000000 1px solid" width="17%"&gt;
                  1,615
                &lt;/td&gt;
                &lt;td align="left" width="2%"&gt;&amp;#160;&lt;/td&gt;
                &lt;td align="left" style="BORDER-BOTTOM: #000000 1px solid" width="1%"&gt;&amp;#160;&lt;/td&gt;
                &lt;td align="right" style="BORDER-BOTTOM: #000000 1px solid" width="17%"&gt;
                  &amp;#8212;
                &lt;/td&gt;
                &lt;td align="left" width="2%"&gt;&amp;#160;&lt;/td&gt;
              &lt;/tr&gt;
              &lt;tr valign="top"&gt;
                &lt;td align="left" bgcolor="#e6efff"&gt;Total debt&lt;/td&gt;
                &lt;td align="left" bgcolor="#e6efff" style="BORDER-BOTTOM: #000000 3px double" width="1%"&gt;$&lt;/td&gt;
                &lt;td align="right" bgcolor="#e6efff" style="BORDER-BOTTOM: #000000 3px double" width="17%"&gt;
                  5,537
                &lt;/td&gt;
                &lt;td align="left" bgcolor="#e6efff" width="2%"&gt;&amp;#160;&lt;/td&gt;
                &lt;td align="left" bgcolor="#e6efff" style="BORDER-BOTTOM: #000000 3px double" width="1%"&gt;$&lt;/td&gt;
                &lt;td align="right" bgcolor="#e6efff" style="BORDER-BOTTOM: #000000 3px double" width="17%"&gt;
                  10,883
                &lt;/td&gt;
                &lt;td align="left" bgcolor="#e6efff" width="2%"&gt;&amp;#160;&lt;/td&gt;
              &lt;/tr&gt;
          &lt;/table&gt;
    &lt;/div&gt;
    &lt;p align="justify" style="font-family: times new roman,times,serif; font-size: 10pt;"&gt;
      &amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;At June 30, 2013 and December 31, 2012, all of the Company&amp;#8217;s outstanding debt was current. At June 30, 2013 it consisted of a revolving credit facility (the &amp;#8220;Credit Facility&amp;#8221;), which had a balance of $3,922, and debt payable to a related party (the &amp;#8220;Counsel Loan&amp;#8221;), which had a balance of $1,615. At December 31, 2012, the only outstanding debt was the $10,883
      balance of the Credit Facility.
    &lt;/p&gt;
    &lt;p align="justify" style="font-family: times new roman,times,serif; font-size: 10pt;"&gt;
      &amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;The Credit Facility is provided to Counsel RB by a U.S. bank under the terms and provisions of a certain Loan and Security Agreement (the &amp;#8220;Loan Agreement&amp;#8221;) dated as of June 2, 2009 and most recently amended as of September 27, 2012 (the &amp;#8220;Amendment Date&amp;#8221;). It is utilized to finance the acquisition of eligible property and equipment for purposes of resale. The Credit Facility bears interest at the greater of prime rate +
      1.0%, or
      4.5%, and the maximum borrowing available under the Credit Facility is US $15,000, subject to Counsel RB maintaining a 1:2 ratio of capital funds, i.e. the sum of Counsel RB&amp;#8217;s tangible net worth plus subordinated indebtedness, as defined in the Loan Agreement, to the outstanding balance. The amount of any advance is determined based upon the value of the eligible assets being acquired, which serve as collateral. At June 30, 2013, $8,069
      of such assets served as collateral for the loan (December 31, 2012 - $13,392). A monthly fee is payable with respect to unused borrowing (&amp;#8220;Unused Line Fee&amp;#8221;). The Unused Line Fee is equal to the product of
      0.50% per annum multiplied by the difference between $15,000
      and the average loan amount outstanding during the month. Effective the Amendment Date, an annual facility fee (&amp;#8220;Facility Fee&amp;#8221;) of $75
      was payable to the lender. Subsequent payments of $50
      will be due on each anniversary of the Amendment Date. The Credit Facility also contains other terms and provisions customary for agreements of this nature, and has been guaranteed by both the Company and Counsel. At June 30, 2013 and December 31, 2012 the Company was in compliance with all covenants of the Credit Facility.
    &lt;/p&gt;
    &lt;p align="justify" style="font-family: times new roman,times,serif; font-size: 10pt;"&gt;
      &amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;The Counsel Loan outstanding at June 30, 2013 consisted of net advances received by the Company from Counsel under an existing loan facility. The Counsel Loan, which was originally entered into during the fourth quarter of 2003, accrues interest at
      10% per annum compounded quarterly from the date funds are advanced, and is due on demand. Any outstanding balance under the Counsel Loan is secured by the assets of the Company. At December 31, 2012, the balance of the Counsel Loan was zero due to the Company having a net receivable of $2,929
      from Counsel. For further discussion of transactions with Counsel, see Note 11.
    &lt;/p&gt;</NonNumbericText><FootnoteIndexer /><CurrencyCode /><CurrencySymbol /><IsIndependantCurrency>false</IsIndependantCurrency><ShowCurrencySymbol>false</ShowCurrencySymbol><DisplayDateInUSFormat>false</DisplayDateInUSFormat></Cell></Cells><ElementDataType>nonnum:textBlockItemType</ElementDataType><SimpleDataType>na</SimpleDataType><ElementDefenition>The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.</ElementDefenition><ElementReferences>Reference 1: http://www.xbrl.org/2003/role/presentationRef

 -Publisher FASB

 -Name Accounting Standards Codification

 -Topic 505

 -SubTopic 10

 -Section 50

 -Paragraph 3

 -URI http://asc.fasb.org/extlink&amp;oid=6928386&amp;loc=d3e21475-112644



Reference 2: http://www.xbrl.org/2003/role/presentationRef

 -Publisher SEC

 -Name Regulation S-X (SX)

 -Number 210

 -Section 02

 -Paragraph 19, 20, 22

 -Article 5



Reference 3: http://www.xbrl.org/2003/role/presentationRef

 -Publisher FASB

 -Name Accounting Standards Codification

 -Topic 210

 -SubTopic 10

 -Section S99

 -Paragraph 1

 -Subparagraph (SX 210.5-02.19,20,22)

 -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682



</ElementReferences><IsTotalLabel>false</IsTotalLabel><UnitID>0</UnitID><Label>Debt [Text Block]</Label></Row></Rows><Footnotes /><IsEquityReport>false</IsEquityReport><ReportName>Debt</ReportName><MonetaryRoundingLevel>UnKnown</MonetaryRoundingLevel><SharesRoundingLevel>UnKnown</SharesRoundingLevel><PerShareRoundingLevel>UnKnown</PerShareRoundingLevel><ExchangeRateRoundingLevel>UnKnown</ExchangeRateRoundingLevel><HasCustomUnits>true</HasCustomUnits><IsEmbedReport>false</IsEmbedReport><IsMultiCurrency>false</IsMultiCurrency><ReportType>Sheet</ReportType><RoleURI>http://www.counselrb.com/taxonomy/role/NotesToFinancialStatementsDebtDisclosureTextBlock</RoleURI><NumberOfCols>1</NumberOfCols><NumberOfRows>1</NumberOfRows></InstanceReport>
