Accrued Severance Benefits - Future Benefits Payments to Employees (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012
Defined Benefit Plan Disclosure [Line Items]
Remainder of 2012	$ 59
2013
2014	339
2015	350
2016	1,264
2017	1,689
2018 - 2022	$ 17,507

Defined benefit plan expected future benefit payments rolling year six.

No definition available.

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- Details

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- Definition

Amount of benefits expected to be paid in the five rolling twelve months after the fifth rolling twelve months following the latest balance sheet presented from a defined benefit plan.

+ References

No definition available.

+ Details

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- Definition

Amount of benefits expected to be paid in the next rolling twelve months following the latest balance sheet presented from a defined benefit plan.

+ References

No definition available.

+ Details

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- Definition

Amount of benefits expected to be paid in the fifth rolling twelve months following the latest balance sheet presented from a defined benefit plan.

+ References

No definition available.

+ Details

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- Definition

Amount of benefits expected to be paid in the third rolling twelve months following the latest balance sheet presented from a defined benefit plan.

+ References

No definition available.

+ Details

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- Definition

Amount of benefits expected to be paid in the fourth fiscal year following the latest fiscal year from a defined benefit plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (f)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

+ Details

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- Definition

Amount of benefits expected to be paid in the second fiscal year following the latest fiscal year from a defined benefit plan.

+ References

+ Details

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