Geographic Information (Narrative) (Details)	3 Months Ended	6 Months Ended	12 Months Ended
Jun. 30, 2013 Net Sales [Member] Two Customers [Member] customer	Jun. 30, 2012 Net Sales [Member] Two Customers [Member] customer	Jun. 30, 2013 Net Sales [Member] Two Customers [Member] customer	Jun. 30, 2012 Net Sales [Member] Two Customers [Member] customer	Jun. 30, 2013 Accounts Receivable [Member] Three Customers [Member] customer	Dec. 31, 2012 Accounts Receivable [Member] Three Customers [Member] customer
Concentration Risk [Line Items]
Number of customers	2	2	2	2	3	3
Percentage of sales and/or receivables	34.00%	35.00%	37.00%	35.00%	33.00%	37.00%

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.

Reference 1: 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 2: 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 3: 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

Reference 4: 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

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