Acquistions Acquisitions (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Significant Acquisitions and Disposals, Acquisition Costs or Sale Proceeds	$ 16,000,000
Assets of Disposal Group, Including Discontinued Operation	15,000,000
Goodwill	103,565,000	110,146,000
After Market Original Equipment Manufacturer
Business Acquisition [Line Items]
Cash and cash equivalents		3,911,000
Real estate, furniture and equipment		898,000
Goodwill		19,664,000
Intangible assets		44,800,000
Other assets		60,661,000
Total assets acquired		129,934,000
Debt		(27,612,000)
Other liabilities assumed		(17,076,000)
Net assets acquired		85,246,000
Aviation Related Business [Member]
Business Acquisition [Line Items]
Goodwill	$ 7,000,000