Commitments and Contingencies Narrative (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Dec. 31, 2012
Loss Contingencies [Line Items]
Restructuring expenses	$ 909,000	$ 1,363,000
Restructuring reserve	3,904,000	1,372,000	4,879,000	53,000
Restructuring expenses, additional expected to be incurred	800,000
Employee Severance [Member]
Loss Contingencies [Line Items]
Restructuring expenses	685,000	1,400,000
Facility Closing [Member]
Loss Contingencies [Line Items]
Restructuring expenses	$ 224,000