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Income Taxes (Tables) | 12 Months Ended
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Sep. 30, 2012
Income Taxes [Abstract] |
Income taxes from continuing operations in accompanying consolidated statements of operations |
|  | 2012 |  |  | 2011 |  |  | 2010 |
Current provision: |  |  |  |  |  |  |  |  |  |  |  |
Federal |  | $ | 6,615 |  |  | $ | 6,011 |  |  | $ | 6,708 |
State and foreign |  |  | 290 |  |  |  | 765 |  |  |  | 408 |
Total current provision |  |  | 6,905 |  |  |  | 6,776 |  |  |  | 7,116 |
Deferred (benefit) provision : |  |  |  |  |  |  |  |  |  |  |  |
Federal |  |  | (835 | ) |  |  | (652 | ) |  |  | (1,883 | )
State |  |  | 107 |  |  |  | (520 | ) |  |  | (254 | )
Total deferred (benefit) provision |  |  | (728 | ) |  |  | (1,172 | ) |  |  | (2,137 | )
Total provision |  | $ | 6,177 |  |  | $ | 5,604 |  |  | $ | 4,979 |
Reconciliation of difference between amounts of income tax provision |
|  | 2012 |  |  | 2011 |  |  | 2010 |
Amount at statutory federal income tax rate |  | $ | 5,707 |  |  | $ | 5,785 |  |  | $ | 1,884 |
Change because of the following items: |  |  |  |  |  |  |  |  |  |  |  |
State taxes |  |  | 236 |  |  |  | 412 |  |  |  | 121 |
Stock-based compensation |  |  | 36 |  |  |  | (7 | ) |  |  | 255 |
Valuation allowance |  |  | 303 |  |  |  | 21 |  |  |  | 2,780 |
Other |  |  | (105 | ) |  |  | (607 | ) |  |  | (61 | )
Income tax provision |  | $ | 6,177 |  |  | $ | 5,604 |  |  | $ | 4,979 |
Components of deferred income taxes and result from differences in the recognition of transactions for income tax and financial reporting purposes |
|  | 2012 |  |  | 2011 |
Depreciable assets |  | $ | 1,146 |  |  | $ | 827 |
Deferred revenue |  |  | 85 |  |  |  | 101 |
Accruals and reserves |  |  | 362 |  |  |  | 566 |
Stock-based compensation |  |  | 3,883 |  |  |  | 6,927 |
Impaired investments |  |  | 6,455 |  |  |  | 6,151 |
Unrealized (gains) losses on investments |  |  | (131 | ) |  |  | 96 |
Other |  |  | 755 |  |  |  | 718 |
Valuation allowance |  |  | (6,530 | ) |  |  | (6,227 | )
Total deferred tax assets |  |  | 6,025 |  |  |  | 9,159 |
Less current deferred tax assets |  |  | (219 | ) |  |  | (327 | )
Noncurrent deferred tax assets |  | $ | 5,806 |  |  | $ | 8,832 |
Summary of reconciliation of unrecognized tax benefits |
|  | 2012 |  |  | 2011 |  |  | 2010 |
Beginning of fiscal year |  | $ | 1,564 |  |  | $ | 1,948 |  |  | $ | 2,042 |
Increases in tax positions for prior years |  |  | 5 |  |  |  | 3 |  |  |  | — |
Decreases in tax positions for prior years |  |  | (3 | ) |  |  | (85 | ) |  |  | (104 | )
Increases in tax positions for current year |  |  | 72 |  |  |  | 55 |  |  |  | 92 |
Settlements with taxing authorities |  |  | — |  |  |  | (53 | ) |  |  | — |
Lapse of the statute of limitations |  |  | (203 | ) |  |  | (304 | ) |  |  | (82 | )
End of fiscal year |  | $ | 1,435 |  |  | $ | 1,564 |  |  | $ | 1,948 |

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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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- 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 -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 + Details
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- Definition Tabular disclosure of the change in unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 55 -Paragraph 217 -URI http://asc.fasb.org/extlink&oid=21917533&loc=d3e36027-109320 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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