Acquisitions (Details Textual) (USD $)	12 Months Ended			0 Months Ended		12 Months Ended	0 Months Ended			12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Sep. 09, 2013 Discera, Inc. [Member]	Aug. 30, 2013 Discera, Inc. [Member]	Dec. 31, 2013 Discera, Inc. [Member]	Dec. 20, 2012 PhaseLink Acquisition [Member]	Apr. 02, 2012 PhaseLink Acquisition [Member]	Mar. 15, 2012 PhaseLink Acquisition [Member]	Dec. 31, 2012 PhaseLink Acquisition [Member]	Dec. 31, 2013 Customer relationships [Member] Discera, Inc. [Member]	Dec. 31, 2013 Customer relationships [Member] PhaseLink Acquisition [Member]	Dec. 31, 2013 Noncompete Agreements [Member] Discera, Inc. [Member]	Dec. 31, 2013 Noncompete Agreements [Member] PhaseLink Acquisition [Member]	Dec. 31, 2013 Trademarks [Member] Discera, Inc. [Member]	Dec. 31, 2013 Developed Technology Rights [Member] Discera, Inc. [Member]	Dec. 31, 2013 Developed Technology Rights [Member] PhaseLink Acquisition [Member]	Dec. 31, 2013 Minimum [Member] Trademarks [Member] PhaseLink Acquisition [Member]	Dec. 31, 2013 Maximum [Member] Trademarks [Member] PhaseLink Acquisition [Member]
Business Acquisition [Line Items]
Date of acquisition agreement					Aug. 30, 2013				Mar. 15, 2012
Acquisition effective date				Sep. 09, 2013				Apr. 02, 2012
Percentage of outstanding shares acquired							5.00%	95.00%
Total purchase price				$ 7,172,000				$ 19,694,000
Short-term debt				1,095,000				282,000
Payments to acquire remaining noncontrolling interest	6,122,000	0	0				931,000
Resulting ownership percentage in PhaseLink							100.00%
Identifiable intangible assets estimated useful life											3 years	10 years	1 year	2 years	10 years	10 years	10 years	2 years	5 years
Business Acquisition, Cash paid at closing				6,100,000				16,400,000
Business Acquisition, Cash Withheld				1,100,000
Acquisition Costs, Period Cost						$ 200,000				$ 200,000