Restructuring - Restructuring Reserve (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	$ 5,407		$ 5,407
Restructuring Reserve [Roll Forward]
Accrual additions	1,575	$ 765	2,368	$ 2,288
Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Accrued restructuring balance as of December 31, 2014			739
Accrual additions			2,368
Cash payments	(1,165)	$ (253)	(2,175)	$ (1,441)
Accrued restructuring balance as of September 30, 2015	932		932
Precise Machine [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	615		615
Precise Machine [Member] | Lease Termination [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	124		124
Relocation of Machining Operations from Savannah Facility [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	47		47
Other Expense [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	115		115
Other Expense [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	$ 3,529		$ 3,529