Segment Reporting (Tables)

12 Months Ended

Dec. 31, 2011

Segment Reporting [Abstract]

Schedule Of Automotive And Other Segment Reporting

		September 30,		September 30,			September 30,
	2011		2010			2009
Revenue:
Automotive Products
United States	$	334,692,637	$	274,165,934		$	173,459,790
Germany		248,495,295		212,555,637			159,713,458
Japan		76,123,221		64,412,780			54,867,288
Other		343,850,209		245,957,611			137,597,471
Other		20,600,687		19,171,452			18,884,986
Total	$	1,023,762,049	$	816,263,414		$	544,522,993
Income(Loss) from Operations:
Automotive Products	$	231,030,145	$	191,430,183		$	96,815,575
Other		337,780		(458,114	)		(2,196,506	)
Total	$	231,367,925	$	190,972,069		$	94,619,069
Assets:
Automotive Products	$	566,395,900	$	391,514,600		$	311,306,542
Other		8,993,853		6,687,533			5,793,232
Corporate		600,637,249		604,488,506			505,503,715
Total	$	1,176,027,002	$	1,002,690,639		$	822,603,489
Depreciation & Amortization:
Automotive Products	$	40,314,620	$	35,722,078		$	34,960,303
Other		320,900		275,599			243,734
Corporate		1,999,164		2,622,997			3,160,455
Total	$	42,634,684	$	38,620,674		$	38,364,492
Capital Expenditures:
Automotive Products	$	115,377,859	$	43,031,399		$	15,250,621
Other		58,996		203,654			567,486
Corporate		4,740,875		3,661,897			5,312,393
Total	$	120,177,730	$	46,896,950		$	21,130,500

Schedule Of Automotive Customers Individually Accounted For 10% Or More Of Net Sales

		September 30,			September 30,			September 30,			September 30,			September 30,			September 30,			September 30,
Customer
	VW/Audi			General Motors			Toyota Motor Corporation			Hyundai/ Kia			Daimler AG			BMW			Ford
2011		15	%		12	%		12	%		11	%		11	%		#			#
2010		13	%		15	%		15	%		#			12	%		#			#
2009		13	%		13	%		17	%		#			12	%		10	%		10	%