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Income taxes (Tables) | 12 Months Ended
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Dec. 31, 2012
Components of Pre-tax Income and Comprehensive Provision for Income Taxes | The provision for income taxes attributable to continuing operations, the difference between such provision for income taxes and the amount that would be expected using the U.S. federal statutory income tax rate of 35%, and the comprehensive provision for income taxes are presented below. All of our pre-tax income attributable to continuing operations relates to operations in the United States.
|  | Years ended December 31, |
|  | 2010 |  |  | 2011 |  |  | 2012 |
|  | (In thousands) |
Provision for income taxes: |  |  |  |  |  |  |  |  |  |  |  |
Currently payable |  | $ | 2,680 |  |  | $ | 2,677 |  |  | $ | 1,633 |
Deferred income tax benefit |  |  | (813 | ) |  |  | (133 | ) |  |  | (218 | )
Total |  | $ | 1,867 |  |  | $ | 2,544 |  |  | $ | 1,415 |
Expected tax expense, at the U.S. federal statutory income tax rate of 35% |  | $ | 1,857 |  |  | $ | 2,117 |  |  | $ | 1,729 |
State income taxes and other, net |  |  | 231 |  |  |  | 337 |  |  |  | 173 |
Tax credits |  |  | (221 | ) |  |  | (251 | ) |  |  | (170 | )
Valuation allowance |  |  | — |  |  |  | 341 |  |  |  | (317 | )
Total |  | $ | 1,867 |  |  | $ | 2,544 |  |  | $ | 1,415 |
Comprehensive provision for income tax allocable to: |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations |  | $ | 1,867 |  |  | $ | 2,544 |  |  | $ | 1,415 |
Discontinued operations |  |  | 3,877 |  |  |  | 4,876 |  |  |  | 5,397 |
Total |  | $ | 5,744 |  |  | $ | 7,420 |  |  | $ | 6,812 |
Components of Net Deferred Tax Assets (Liabilities) | The components of net deferred tax assets (liabilities) are summarized below.
|  | December 31, |
|  | 2011 |  |  | 2012 |
|  | (In thousands) |
Tax effect of temporary differences related to: |  |  |  |  |  |  |  |
Inventories |  | $ | 932 |  |  | $ | 953 |
Tax on unremitted earnings of non-U.S. subsidiaries |  |  | (7,671 | ) |  |  | — |
Property and equipment |  |  | (3,971 | ) |  |  | (3,775 | )
Accrued liabilities and other deductible differences |  |  | 164 |  |  |  | 304 |
Accrued employee benefits |  |  | 1,412 |  |  |  | 1,484 |
Tax loss and credit carryforwards |  |  | 494 |  |  |  | 130 |
Goodwill |  |  | (2,179 | ) |  |  | (2,374 | )
Other taxable differences |  |  | (511 | ) |  |  | (87 | )
Valuation allowance |  |  | (341 | ) |  |  | (126 | )
Total |  | $ | (11,671 | ) |  | $ | (3,491 | )
Net current deferred tax assets |  |  | 2,495 |  |  |  | 2,691 |
Net noncurrent deferred tax liabilities |  |  | (14,166 | ) |  |  | (6,182 | )
Total |  | $ | (11,671 | ) |  | $ | (3,491 | )

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 + Details
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- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
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