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Defined benefit plan contributions by employer for foreign employees.

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No definition available.

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- Definition

Maximum percentage of cash bonuses for contribution in compensation plan.

+ References

No definition available.

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- Definition

Maximum percentage of current compensation of employee to contribute in plan.

+ References

No definition available.

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- Definition

Maximum percentage of salary for contribution in compensation plan.

+ References

No definition available.

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- Definition

Number of guaranteed annual payments.

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No definition available.

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- Definition

Period for receiving payments in annual installments.

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- Definition

1) For defined benefit pension plans, the benefit obligation is the projected benefit obligation, which is the actuarial present value as of a date of all benefits attributed by the pension benefit formula to employee service rendered prior to that date. 2) For other postretirement defined benefit plans, the benefit obligation is the accumulated postretirement benefit obligation, which is the actuarial present value of benefits attributed to employee service rendered to a particular date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Accumulated Postretirement Benefit Obligation

-URI http://asc.fasb.org/extlink&oid=6503904

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 6

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph a

-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.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

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-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.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

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-Section 50

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Projected Benefit Obligation

-URI http://asc.fasb.org/extlink&oid=6522206

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- Definition

The increase in the fair value of plan assets from contributions made by the employer.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph b

-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.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)(3)

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

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- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

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Benefit Plans (Details) (USD $)	6 Months Ended		3 Months Ended		6 Months Ended
Benefit Plans (Details) (USD $)	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012 Employee Benefit Plans [Member]	Jun. 30, 2011 Employee Benefit Plans [Member]	Jun. 30, 2012 Employee Benefit Plans [Member]	Jun. 30, 2012 Executive Deferred Compensation Plan [Member] Installment	Dec. 31, 2011 Executive Deferred Compensation Plan [Member]
Benefit Plans (Textual) [Abstract]
Maximum percentage of current compensation of employee to contribute in plan					15.00%
Amount of company contribution in compensation	$ 404,000	$ 360,000	$ 185,000	$ 165,000
Company contributes to various retirement plans for foreign employees	103,000	67,000	52,000	27,000
Maximum percentage of salary for contribution in compensation plan						50.00%
Maximum percentage of cash bonuses for contribution in compensation plan						100.00%
Percent of matching cash						4.00%
Period for receiving payments in annual installments						15 years
Number of guaranteed annual payments						20
Deferred compensation obligation						$ 1,500,000	$ 1,300,000