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INCOME TAXES: (Details 2) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2009 | Dec. 31, 2011 examination | Dec. 31, 2010 | Dec. 31, 2009
INCOME TAXES: |  |  |  |
Tax benefits of foreign subsidiary tax loss carry forwards expiring in 2014 |  | $ 697,000 |  |
Tax benefits of foreign subsidiary tax loss carry forwards expiring in 2015 |  | 2,672,000 |  |
Tax benefits of foreign subsidiary tax loss carry forwards expiring in 2026 |  | 366,000 |  |
Tax benefits of foreign subsidiary tax loss carry forwards expiring in 2027 |  | 640,000 |  |
Tax benefits of foreign subsidiary tax loss carry forwards expiring in 2028 |  | 6,578,000 |  |
Tax benefits of foreign subsidiary tax loss carry forwards expiring in 2029 |  | 4,681,000 |  |
Tax benefits of foreign subsidiary tax loss carry forwards expiring in 2030 |  | 772,000 |  |
Effective income tax rate differs from the statutory rate |  |  |  |
U.S. statutory rate (as a percent) |  | 35.00% | 35.00% | 35.00%
State income taxes, net (as a percent) |  | 1.20% | 1.10% | 1.70%
Exempt municipal bond interest (as a percent) |  | (0.50%) | (0.40%) | (0.70%)
Foreign tax rates (as a percent) |  | (0.40%) | (2.00%) | (4.90%)
Release of prior period valuation allowances (as a percent) |  |  |  | (13.30%)
Qualified domestic production activities deduction (as a percent) |  | (2.50%) | (2.60%) | (2.00%)
Tax credits receivable (as a percent) |  | (0.40%) | (0.20%) | (0.40%)
Adjustment of deferred tax balances (as a percent) |  | (1.70%) |  |
Reserve for uncertain tax benefits (as a percent) |  | (0.60%) | (2.30%) | 1.30%
Other, net (as a percent) |  | (2.20%) | (1.20%) | (1.00%)
Effective income tax rate (as a percent) |  | 27.90% | 27.40% | 15.70%
Release of prior period valuation allowances related to recapitalization of Canadian operations | 8,400,000 |  |  |
Release of valuation allowances that were provided through the first nine months of 2009 | 2,300,000 |  |  |
Withholding tax rate as per The Treaty on payment from Canada to the U.S. (as a percent) |  |  | 0.00% |
Release of withholding taxes accrued for 2007 and 2008 and through third quarter of 2009 | 1,500,000 |  |  |
Foreign subsidiaries' undistributed earnings |  | 6,410,000 | 4,787,000 |
Portion of unrecognized tax benefits that, if recognized, would favorably affect annual effective income tax rate |  | 4,199,000 | 4,949,000 |
Interest and penalties included in liability for uncertain tax positions |  | 1,541,000 | 1,697,000 |
Reconciliation of the beginning and ending balances of the total amounts of unrecognized tax benefits |  |  |  |
Unrecognized tax benefits at the beginning of the period |  | 8,138,000 | 14,370,000 | 13,069,000
Increases in tax positions for the current year |  | 320,000 | 632,000 | 2,661,000
Reductions in tax positions for lapse of statute of limitations |  | (668,000) | (1,122,000) | (514,000)
Reductions in tax positions for withdrawal of positions previously taken |  |  | (5,256,000) |
Reductions in tax positions for effective settlements |  | (986,000) | (486,000) | (846,000)
Unrecognized tax benefits at the end of the period | $ 14,370,000 | $ 6,804,000 | $ 8,138,000 | $ 14,370,000
Number if state examinations effectively settled |  | 1 |  |
Reduction in statutory income tax rates in Canada (as a percent) |  | 5.00% |  |

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- Definition The tax effect as of the balance sheet date of the amount of excess of tax deductions over gross income in a year which cannot be used on the tax return of a country outside the country of domicile in the current year, but can be carried forward to reduce taxable income or income taxes payable up to 2014, for which there must be sufficient tax-basis income to utilize a portion or all of the carryforward amount to realize the deferred tax asset. + References No definition available. + Details
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- Definition This element represents the total of accruals as of the date of the statement of financial position for interest recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 15, 16 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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- Definition The gross amount of increases in unrecognized tax benefits resulting from tax positions that have been or will be taken in the tax return for the current period, excluding amounts pertaining to examined tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph a(2) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition The gross amount of decreases in unrecognized tax benefits resulting from lapses of the applicable statutes of limitations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph a(4) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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