Other Expense (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Other Expense [Line Items]
Administrative consolidation costs	$ 3,133	$ 1,940	$ 6,303	$ 3,444
Costs associated with legal arbitration and patent dispute	1,475	0	2,211	1,555
Other expense	4,608	2,658	8,514	6,421
Distributor [Member]
Other Expense [Line Items]
Costs associated with purchase	0	0	0	704
Business [Member]
Other Expense [Line Items]
Costs associated with purchase	$ 0	$ 718	$ 0	$ 718