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Income Taxes (Details 3) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Deferred tax assets: |  |
Capital assets and other | $ 34,563 | $ 33,567
Net operating loss carry forwards | 43,280 | 50,274
Interest deductions | 19,285 | 17,255
Deferred acquisition consideration | 21,418 | 5,070
Stock compensation | 2,317 | 2,356
Pension plan | 2,168 | 0
Unrealized foreign exchange | 843 | 753
Capital loss carry forwards | 17,408 | 16,921
Accounting reserves | 4,721 | 6,493
Gross deferred tax asset | 146,003 | 132,689
Less: valuation allowance | (134,761) | (113,585)
Net deferred tax assets | 11,242 | 19,104
Deferred tax liabilities: |  |
Deferred finance charges | (449) | (514)
Capital assets | (348) | (417)
Goodwill amortization | (53,875) | (53,181)
Total deferred tax liabilities | (54,672) | (54,112)
Net deferred tax asset (liability) | (43,430) | (35,008)
Disclosed as: |  |
Deferred tax assets | 9,637 | 15,767
Deferred tax liabilities | (53,067) | (50,775)
Net deferred tax asset (liability) | $ (43,430) | $ (35,008)

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- Definition The tax effect as of the balance sheet date of the amount of the estimated future tax deductions arising from deferred acquisition consideration, which can only be deducted for tax purposes when actual costs are incurred, and which can only be realized if sufficient tax-basis income is generated in future periods to enable the deduction to be taken. + References No definition available. + Details
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- Definition The cumulative amount of all deferred tax assets, which result from applying the applicable tax rate to net taxable temporary differences pertaining to each jurisdiction to which the entity is obligated to pay income tax. A taxable temporary difference is a difference between the tax basis and the carrying amount of an asset or liability in the financial statements prepared in accordance with generally accepted accounting principles that will result in taxable amounts in one or more future periods. + References No definition available. + Details
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- Definition The cumulative amount of all deferred tax liabilities, which result from applying the applicable tax rate to net taxable temporary differences pertaining to each jurisdiction to which the entity is obligated to pay income tax. A taxable temporary difference is a difference between the tax basis and the carrying amount of an asset or liability in the financial statements prepared in accordance with generally accepted accounting principles that will result in taxable amounts in one or more future periods. + References No definition available. + Details
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Deferred Tax Asset -URI http://asc.fasb.org/extlink&oid=6510090 + Details
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32621-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32632-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 20 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=29652012&loc=d3e28680-109314 + Details
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