Segment Reporting and Geographic Information (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]
Number of business segments	2
Major Customer, One [Member] | Network Integration segment [Member]
Segment Reporting Information [Line Items]
Amount of Revenue from One Customer	$ 46.6	$ 43.4	$ 44.2
Percentage of Revenue from One Customer	28.00%	28.00%	28.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Major Customer, One [Member] | Network Integration segment [Member]
Segment Reporting Information [Line Items]
Percentage of Accounts Receivable			14.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Major Customer, Two [Member] | Network Integration segment [Member]
Segment Reporting Information [Line Items]
Percentage of Accounts Receivable			30.00%