Segment Reporting Segment Reporting (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Segment Reporting Information [Line Items]
Revenue, Net	$ 71,995	$ 75,962
Operating Income (Loss)	(2,863)	(2,833)
Severance Costs	0	(185)
Interest expense	(213)	(82)
Other income (expense), net	(61)	(7)
Income (loss) from continuing operations before income taxes	(3,137)	(2,922)
MRO [Member]
Segment Reporting Information [Line Items]
Revenue, Net	67,213	71,364
Operating Income (Loss)	(3,488)	(3,239)
OEM [Member]
Segment Reporting Information [Line Items]
Revenue, Net	4,782	4,598
Operating Income (Loss)	$ 625	$ 591