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Income Taxes Income Tax Disclosure (Tables) | 12 Months Ended
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Dec. 31, 2011
Income Tax Disclosure [Abstract] |
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] | For the years ended December 31, 2011, 2010 and 2009, income before income taxes is broken out between U.S. and foreign-sourced operations and consisted of the following (in thousands):
| 2011 |  | 2010 |  | 2009
Domestic | $ | 21,123 |  |  | $ | 10,551 |  |  | $ | 26,918 |
Foreign | 11,752 |  |  | 6,237 |  |  | 6,176 |
Total | $ | 32,875 |  |  | $ | 16,788 |  |  | $ | 33,094 |
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] | The components of the provision for income taxes for the years ended December 31, 2011, 2010 and 2009 consisted of the following (in thousands):
| 2011 |  | 2010 |  | 2009
Current expense: |  |  |  |  |  |  |  |
Federal | $ | 5,662 |  |  | $ | 3,547 |  |  | $ | 7,846 |
State | 1,001 |  |  | 595 |  |  | 689 |
Foreign | 1,491 |  |  | 740 |  |  | 238 |
Total current expense | 8,154 |  |  | 4,882 |  |  | 8,773 |
Deferred expense (benefit): |  |  |  |  |  |  |  |
Federal | 1,121 |  |  | 30 |  |  | 1,264 |
State | 74 |  |  | (545 | ) |  | 227 |
Foreign | 482 |  |  | (39 | ) |  | 300 |
Total deferred expense (benefit) | 1,677 |  |  | (554 | ) |  | 1,791 |
Total | $ | 9,831 |  |  | $ | 4,328 |  |  | $ | 10,564 |
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] | The difference between the income tax expense reported and amounts computed by applying the statutory federal rate of 35.0% to pretax income for the years ended December 31, 2011, 2010 and 2009 consisted of the following (in thousands):
| 2011 |  | 2010 |  | 2009
Computed federal income tax expense at statutory rate of 35% | $ | 11,506 |  |  | $ | 5,876 |  |  | $ | 11,583 |
State income taxes | 699 |  |  | 33 |  |  | 596 |
Tax credits | (778 | ) |  | (530 | ) |  | (670 | )
Production activity deduction | (425 | ) |  | (355 | ) |  | (215 | )
Foreign tax rate differential | (1,297 | ) |  | (1,212 | ) |  | (1,062 | )
Uncertain tax positions | 281 |  |  | (372 | ) |  | 114 |
Deferred compensation insurance assets | 88 |  |  | (133 | ) |  | (196 | )
Transaction-related expenses | — |  |  | 323 |  |  | — |
Other — including the effect of graduated rates | (243 | ) |  | 698 |  |  | 414 |
Total income tax expense | $ | 9,831 |  |  | $ | 4,328 |  |  | $ | 10,564 |
Schedule of Deferred Tax Assets and Liabilities [Table Text Block] | Deferred income tax assets and liabilities at December 31, 2011 and 2010, consisted of the following temporary differences and carry-forward items (in thousands):
| 2011 |  | 2010
Deferred income tax assets: |  |  |  |
Allowance for uncollectible accounts receivable | $ | 188 |  |  | $ | 242 |
Accrued compensation expense | 3,064 |  |  | 3,230 |
Inventory differences | 364 |  |  | 1,796 |
Net operating loss carry-forwards | 22,689 |  |  | 26,273 |
Deferred revenue | 273 |  |  | 214 |
Stock-based compensation expense | 2,166 |  |  | 1,923 |
Uncertain tax positions | 1,052 |  |  | 577 |
Other | 1,848 |  |  | 1,686 |
Total deferred income tax assets | 31,644 |  |  | 35,941 |
Deferred income tax liabilities: |  |  |  |  |
Prepaid expenses | (823 | ) |  | (493 | )
Property and equipment | (17,236 | ) |  | (18,103 | )
Intangible assets | (6,169 | ) |  | (9,320 | )
Other | (97 | ) |  | (505 | )
Total deferred income tax liabilities | (24,325 | ) |  | (28,421 | )
Valuation allowance | (361 | ) |  | — |
Net deferred income tax assets | $ | 6,958 |  |  | $ | 7,520 |
Reported as: |  |  |
Deferred income tax assets - Current | $ | 3,704 |  |  | $ | 4,647 |
Deferred income tax assets - Long-term | 5,366 |  |  | 4,140 |
Deferred income tax liabilities - Current | — |  |  | — |
Deferred income tax liabilities - Long-term | (2,112 | ) |  | (1,267 | )
Net deferred income tax assets | $ | 6,958 |  |  | $ | 7,520 |
Summary of Income Tax Contingencies [Table Text Block] | A reconciliation of the beginning and ending amount of liabilities associated with uncertain tax positions for the years ended December 31, 2011, 2010 and 2009 consisted of the following (in thousands):
Tabular Roll-forward | 2011 |  | 2010 |  | 2009
Unrecognized tax benefits, opening balance | $ | 2,952 |  |  | $ | 2,790 |  |  | $ | 2,668 |
Gross increases in tax positions taken in a prior year | 347 |  |  | 518 |  |  | 163 |
Gross decreases in tax positions taken in a prior year | — |  |  | (51 | ) |  | (40 | )
Gross increases in tax positions taken in the current year | 865 |  |  | 520 |  |  | 710 |
Settlements with taxing authorities | (507 | ) |  | — |  |  | — |
Lapse of applicable statute of limitations | (544 | ) |  | (825 | ) |  | (711 | )
Unrecognized tax benefits, ending balance | $ | 3,113 |  |  | $ | 2,952 |  |  | $ | 2,790 |

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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 -Topic 740 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph -Name Accounting Standards Codification -Paragraph 9 -Section 50 -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 -Topic 740 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph -Name Accounting Standards Codification -Paragraph 2 -Section 50 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 740 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph -Name Accounting Standards Codification -Paragraph 12 -Section 50 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 + Details
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- Definition Tabular disclosure of income before income tax between domestic and foreign jurisdictions. + References No definition available. + Details
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- Definition Tabular disclosure of tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities (i.e., uncertain tax positions) and other types of income tax contingencies, including: (1) the policy on classification of interest and penalties; (2) a tabular reconciliation of the total amounts of unrecognized tax benefits at the beginning and end of the period; the total amount(s) of: (3) unrecognized tax benefits that, if recognized, would affect the effective tax rate, and (4) interest and penalties recognized in each of the income statement and balance sheet; (5) for positions for which it is reasonably possible that the total amounts unrecognized will significantly change within 12 months of the reporting date the: (i) nature of the uncertainty, (ii) nature of the event that could occur that would cause the change, and (iii) an estimate of the range of the reasonably possible change or a statement that an estimate of the range cannot be made; and (6) a description of tax years that remain subject to examination by major tax jurisdictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -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 15 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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