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Business Segments and Significant Customers (Details 2)	3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended			6 Months Ended	12 Months Ended
	Jun. 30, 2012 Total Customer concentration risk Customer A	Jun. 30, 2011 Total Customer concentration risk Customer A	Jun. 30, 2012 Total Customer concentration risk Customer A	Jun. 30, 2011 Total Customer concentration risk Customer A	Jun. 30, 2012 Total Customer concentration risk Customer B	Jun. 30, 2011 Total Customer concentration risk Customer B	Jun. 30, 2012 Total Customer concentration risk Customer B	Jun. 30, 2011 Total Customer concentration risk Customer B	Jun. 30, 2012 Total Customer concentration risk Customer C	Jun. 30, 2011 Total Customer concentration risk Customer D	Jun. 30, 2011 Total Customer concentration risk Customer D	Jun. 30, 2012 Net accounts receivable Credit concentration item	Dec. 31, 2011 Net accounts receivable Credit concentration item	Jun. 30, 2012 Net accounts receivable Credit concentration Four customers	Dec. 31, 2011 Net accounts receivable Credit concentration Four customers
Significant Customers
Percentage of concentration risk	35.00%	15.00%	31.00%	13.00%	19.00%	26.00%	24.00%	24.00%	11.00%	17.00%	18.00%			95.00%	96.00%
Number of customers												4	4

X

- Definition

Represents the number of customers on whom the entity relies significantly giving rise to concentration of risk.

+ References

No definition available.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 18

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 21

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13537-108611



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13531-108611

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