Accounts Receivable and Sales Concentrations (Details Textual) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Accounts Receivable and Sales Concentrations (Textual) [Abstract]
Net sales	$ 370,084	$ 424,691	$ 365,369
Accounts receivable, net	51,628	66,707
SKF [Member]
Accounts Receivable and Sales Concentrations (Textual) [Abstract]
Net sales	124,349	159,668	139,242
Percentage of consolidated revenue	34.00%	38.00%	38.00%
Customers accounted percentage	10.00%	10.00%
Accounts receivable concentrations in excess	10.00%
Accounts receivable, net	15,433	22,572
SNR [Member]
Accounts Receivable and Sales Concentrations (Textual) [Abstract]
Accounts receivable concentrations in excess		10.00%
Accounts receivable, net		$ 6,796
Schaeffler Group [Member]
Accounts Receivable and Sales Concentrations (Textual) [Abstract]
Accounts receivable concentrations in excess			10.00%

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Accounts receivable major customer threshold percentage.

+ References

No definition available.

+ Details

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- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.3-4)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 3

-Subparagraph a(1)

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 4

-Article 5

+ Details

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- Definition

Percentage of revenue generated from a single external customer that accounts for 10 percent or more of an entity's revenues.

+ References

No definition available.

+ Details

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- Definition

Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(a))

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

+ Details

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- Definition

The percentage of net product revenue to total net revenue from the sale of goods as of year end.

+ References

No definition available.

+ Details

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