Restructuring (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2014	Dec. 31, 2013
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date		$ 1,976
Restructuring and Related Cost, Expected Cost Remaining		0
Restructuring activities, total expense to be incurred		1,976
Precise Machine [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date		364
Relocation of Machining Operations from Savannah Facility [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date		500
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Payments for Restructuring	1,061	1,182
Employee Severance [Member] | Precise Machine [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date		634
Restructuring and Related Cost, Expected Cost Remaining		0
Restructuring activities, total expense to be incurred		634
Employee Severance [Member] | Relocation of Machining Operations from Savannah Facility [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date		47
Restructuring and Related Cost, Expected Cost Remaining		0
Restructuring activities, total expense to be incurred		47
Employee Severance [Member] | Other Expense [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date		1,171
Restructuring and Related Cost, Expected Cost Remaining		0
Restructuring activities, total expense to be incurred		1,171
Lease Termination [Member] | Precise Machine [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date		124
Restructuring and Related Cost, Expected Cost Remaining		0
Restructuring activities, total expense to be incurred		124
Selling, General and Administrative Expenses [Member] | Employee Severance [Member] | Precise Machine [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring related expenses	212	305	453
Selling, General and Administrative Expenses [Member] | Employee Severance [Member] | Relocation of Machining Operations from Savannah Facility [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring related expenses	6	47
Selling, General and Administrative Expenses [Member] | Employee Severance [Member] | Other Expense [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring related expenses	$ 877	$ 1,171