Indemnification Obligations (Narrative) (Details) (Indemnification Agreement [Member]) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2013 Source Photonics [Member] USD ($)	Jun. 30, 2013 Pedrena [Member] USD ($)	Jun. 30, 2013 Pedrena [Member] EUR (€)	Dec. 31, 2012 Pedrena [Member] USD ($)
Loss Contingencies [Line Items]
Indemnification claims deductible	$ 1.0
Indemnification claims cap	20.0
Representations and warranties agreement, term to obtain an insurance policy		90 days	90 days
Representations and warranties agreement, cash threshold		20
Representations and warranties agreement, potential escrow deposit			€ 1.5	$ 2.0