Other Accrued and Other Long-Term Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Restructuring Reserve, Current	$ 567	$ 4,202
Other Accrued Liabilities, Noncurrent	1,719	1,467
Restructuring Reserve, Noncurrent	621	0
Contingent Consideration Liability, Current		0
Contingent Consideration Liability, Non-Current		7,594
Deferred Compensation Liability, Current	1,395	2,302
Purchase Obligation	375	596
Accrued Income Taxes, Current	318	537
Other Accrued Liabilities, Current	2,962	5,120
Accrued Liabilities, Current	9,601	15,567
Other Liabilities, Noncurrent	4,851	9,689
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Obligations, Fair Value Disclosure	(2,541)	(7,594)	0
Warranty Reserves [Member]
Product Warranty Accrual	3,148	2,810
Warranty Reserves [Member]
Product Warranty Accrual	$ 806	$ 628