Summary of Significant Accounting Policies (Details)	3 Months Ended	6 Months Ended
Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Summary of Significant Accounting Policies (Textual) [Abstract]
Number of Major Customers	6	6	6	6
Percentage of net revenue	67.20%	70.10%	65.90%	70.10%

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

No definition available.

Name:	us-gaap_EntityWideRevenueMajorCustomerPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration