PENSION PLANS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011 segment Employee Plan	Sep. 30, 2010
PENSION PLANS
Number of types of retirement plans			2
Aggregate net pension expense relating to the two plan types
Service costs	$ 275	$ 463	$ 904	$ 1,036
Interest cost	285	375	936	970
Amortization of actuarial loss		19	68	15
Settlement and other related losses (gains)		242	(726)	1,149
Net pension expenses	560	1,099	1,182	3,170
Expected net pension cost for the current fiscal year			2,591
Cash funding for benefits paid	51		127
Expected cash funding for benefits to be paid in current fiscal year	417		417
Low End of Range \| France
Defined Benefit Plan Disclosure
Period of salary paid to Company's French employees as termination benefits at retirement, range (in months)			1
High End of Range \| France
Defined Benefit Plan Disclosure
Period of salary paid to Company's French employees as termination benefits at retirement, range (in months)			5
France
Aggregate net pension expense relating to the two plan types
Settlement and other related (gains) losses		$ 242	$ (726)	$ 1,149

The total amount of expected net periodic benefit cost for defined benefit plans for the current fiscal year. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments.

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Represents the period of salary paid to the entity's employees as termination benefits only at retirement, under the retirement plans.

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Represents the number of types of retirement plans of the entity.

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The amount of gains or losses recognized in net periodic benefit cost.

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

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The employer's best estimate, as soon as it can be reasonably determined, of contributions expected to be paid to the plan in the current remaining fiscal period. Estimated contributions may be presented in the aggregate combining (1) contributions required by funding regulations or laws, (2) discretionary contributions, and (3) noncash contributions.

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The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time.

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The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments.

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The amount of net gain (loss) recognized in net periodic benefit cost as a result of an irrevocable action that relieves the employer (or the plan) of primary responsibility for a benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. Examples of transactions that constitute a settlement include (a) making lump-sum cash payments to plan participants in exchange for their rights to receive specified benefits and (b) purchasing nonparticipating annuity contracts to cover vested benefits.

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The aggregate amount of net gain (loss) recognized in net periodic benefit cost due to settlements and curtailments. Curtailments result from an event that significantly reduces the expected years of future service of present employees or eliminates for a significant number of employees the accrual of defined benefits for some or all of their future services. Settlements result from an irrevocable action that relieves the employer (or the plan) of primary responsibility for a benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. Examples of transactions that constitute a settlement include (a) making lump-sum cash payments to plan participants in exchange for their rights to receive specified benefits and (b) purchasing nonparticipating annuity contracts to cover vested benefits.

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The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan.

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-Glossary Service Cost (Component of Net Periodic Pension Cost)

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