Acquisitions (Details) (USD $) In Thousands, unless otherwise specified	Sep. 09, 2013 Discera, Inc. [Member]	Apr. 02, 2012 PhaseLink Acquisition [Member]
Business Acquisition [Line Items]
Cash and cash equivalents		$ 3,255
Accounts receivable	689	1,163
Inventories	1,141	1,320
Other assets	24	273
Property, plant, and equipment	1,165	1,724
Developed technology	940	4,400
Customer relationships	800	3,000
Trademarks	100	510
Non-competition agreements	40	410
In-process research and development	890	410
Goodwill, Expected Tax Deductible Amount	2,478
Goodwill		6,076
Short-term debt	(1,095)	(282)
Other liabilities		(1,588)
Non-controlling interest		(977)
Total purchase price	$ 7,172	$ 19,694