Segment Reporting and Geographic Information (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended													12 Months Ended	3 Months Ended	12 Months Ended
	Mar. 31, 2014 segments	Mar. 31, 2013	Mar. 31, 2014 Network Integration [Member]	Mar. 31, 2013 Network Integration [Member]	Mar. 31, 2014 Network Integration [Member] Major Customer, One [Member]	Mar. 31, 2013 Network Integration [Member] Major Customer, One [Member]	Mar. 31, 2014 Network Integration [Member] Major Customer, Two [Member]	Mar. 31, 2013 Network Integration [Member] Major Customer, Two [Member]	Mar. 31, 2014 Network Integration [Member] Customer Concentration Risk [Member] Revenue [Member] Major Customer, One [Member]	Mar. 31, 2013 Network Integration [Member] Customer Concentration Risk [Member] Revenue [Member] Major Customer, One [Member]	Mar. 31, 2014 Network Integration [Member] Customer Concentration Risk [Member] Revenue [Member] Major Customer, Two [Member]	Mar. 31, 2013 Network Integration [Member] Customer Concentration Risk [Member] Revenue [Member] Major Customer, Two [Member]	Mar. 31, 2014 Network Integration [Member] Customer Concentration Risk [Member] Accounts Receivable [Member] Major Customer, One [Member]	Dec. 31, 2013 Network Integration [Member] Customer Concentration Risk [Member] Accounts Receivable [Member] Major Customer, One [Member]	Mar. 31, 2014 Network Integration [Member] Customer Concentration Risk [Member] Accounts Receivable [Member] Major Customer, Two [Member]	Dec. 31, 2013 Network Integration [Member] Customer Concentration Risk [Member] Accounts Receivable [Member] Major Customer, Two [Member]
Segment Reporting Information [Line Items]
Number of Business Segments	2
Revenue	$ 42,318	$ 38,905	$ 20,053	$ 17,982	$ 11,000	$ 11,500	$ 6,500	$ 5,100
Concentration percentage									26.00%	30.00%	15.00%	13.00%	10.00%	22.00%	27.00%	27.00%