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INCOME TAXES: (Details 2) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
INCOME TAXES: |  |  |
Tax benefits of foreign subsidiary tax loss carry forwards expiring in 2026 | $ 350 |  |
Tax benefits of foreign subsidiary tax loss carry forwards expiring in 2027 | 612 |  |
Tax benefits of foreign subsidiary tax loss carry forwards expiring in 2028 | 6,290 |  |
Tax benefits of foreign subsidiary tax loss carry forwards expiring in 2029 | 4,476 |  |
Tax benefits of foreign subsidiary tax loss carry forwards expiring in Year 2031 | 784 |  |
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) | 1.00% | 1.10% | 1.20%
Exempt municipal bond interest (as a percent) | (0.40%) | (0.50%) | (0.50%)
Foreign tax rates (as a percent) | (2.00%) | (1.60%) | (0.40%)
Qualified domestic production activities deduction (as a percent) | (2.20%) | (3.10%) | (2.50%)
Tax credits receivable (as a percent) | (0.90%) | (0.90%) | (0.40%)
Adjustment of deferred tax balances (as a percent) | (1.10%) | (0.50%) | (1.70%)
Reserve for uncertain tax benefits (as a percent) | (0.70%) | (0.30%) | (0.60%)
Other, net (as a percent) | (0.70%) | 0.70% | (2.20%)
Effective income tax rate (as a percent) | 28.00% | 29.90% | 27.90%
Foreign subsidiaries' undistributed earnings | 10,988 | 8,868 |
Estimated federal income tax liability on foreign subsidiaries' undistributed earnings (as a percent) | 30.00% |  |
Cash and short term investments held by foreign subsidiary | 11,674 | 9,857 |
Portion of unrecognized tax benefits that, if recognized, would favorably affect annual effective income tax rate | 3,539 | 4,306 |
Interest and penalties included in liability for uncertain tax positions | 1,157 | 1,189 |
Reconciliation of the beginning and ending balances of the total amounts of unrecognized tax benefits |  |  |
Unrecognized tax benefits at the beginning of the period | 6,677 | 6,804 | 8,138
Increases in tax positions for the current year | 1,163 | 727 | 320
Reductions in tax positions for lapse of statute of limitations | (867) | (854) | (668)
Reductions in tax positions relating to settlements with taxing authorities | (140) |  |
Reductions in tax positions for effective settlements | (823) |  | (986)
Unrecognized tax benefits at the end of the period | $ 6,010 | $ 6,677 | $ 6,804

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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 2026, 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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