Deferred tax assets valuation allowance related to foreign tax credits, state net operating loss and edge credits.

No definition available.

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- Definition

Effective income tax rate reconciliation dollar amount adjustment related to the closure of a federal tax audit.

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No definition available.

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- Definition

Income tax.

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No definition available.

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- Definition

Percentage of decrease in effective income tax rate impact due to adoption of new accounting standard update.

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No definition available.

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- Definition

Percentage of increase in effective income tax rate impact due to adoption of new accounting standard update.

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No definition available.

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- Definition

Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the income tax rates.

+ 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=84230637&loc=d3e32687-109319

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-Name Accounting Standards Codification
-Topic 740
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-Section S99
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-Name Accounting Standards Codification
-Topic 740
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-Paragraph 13
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- Definition

The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
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- Definition

The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (d)
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- Definition

Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-Paragraph 15
-Subparagraph (c)
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Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Income Tax [Line Items]
Net deferred income tax assets				$ 49,700,000
Effective rate tax adjustment related to federal tax, amount			$ 2,100,000
Decrease in effective tax rate			8.80%
Decrease in unrecognized tax positions	$ 1,800,000	$ 1,800,000
Interest and penalties	$ 1,900,000	1,900,000
ASU 2016-09 [Member]
Income Tax [Line Items]
Effective tax rate adjustment associated with stock compensation		$ 1,100,000
Percentage of decrease in effective tax rate associated with stock compensation	0.60%
Percentage of increase in effective tax rate associated with stock compensation		4.60%
ASU 2016-09 [Member] \| Maximum [Member]
Income Tax [Line Items]
Effective tax rate adjustment associated with stock compensation	$ 100,000