Overview and Summary of Significant Accounting Policies (Details)	6 Months Ended
	Jun. 30, 2012 CompensationPlan Segment	Jun. 30, 2011	Jul. 27, 2012
Overview and Summary of Significant Accounting Policies (Textual) [Abstract]
Number of reportable segments	2
Percentage Acquisition of Equity of Alpine Access, Inc.			100.00%
Percentage of total consolidated revenues representing fulfillment services contracts	1.40%	1.50%
Tax position measurement	greater than 50%
Number of stock based compensation plan	3
Non deliverable forward contracts and options expiring period minimum	1 month
Non deliverable forward contracts and options expiring period maximum	24 months