Consolidated Statements of Changes In Shareholders' Equity (USD $) In Thousands, except Share data	Total	Common Stock	Paid-in Capital	Accumulated Earnings	Loss on Pension Benefit Obligation	Currency Translation Adjustments	Currency Hedge Adjustment	Stockholders' Equity, Total	Noncontrolling Interest
Balance at Dec. 31, 2010	$ 55,293	$ 65,148	$ 20,026	$ (29,974)	$ (84)	$ 177		$ 55,293
Balance (in shares) at Dec. 31, 2010		22,037,000
Exercise of Common Stock options for cash	3,346	4,663	(1,317)					3,346
Exercise of Common Stock options for cash (in shares)	571,964	572,000
Common Stock issued to Board of Directors and employees	669	669						669
Common Stock issued to Board of Directors and employees (in shares)		40,000
Tax benefit from Exercises of Common Stock options	3,275		3,275					3,275
Stock option compensation	1,403		1,403					1,403
Convertible preferred stock dividends	(8,228)			(8,228)				(8,228)
Preferred stock principal paid in common stock	7,780	7,780						7,780
Preferred stock principal paid in common stock (Shares)		672,000
Preferred stock dividend paid in common stock	2,242	2,242						2,242
Preferred stock dividend paid in common stock (Shares)		194,000
Purchase of W.E.T. Automotive AG	46,122								46,122
Proceeds from subsidiary issuance of equity shares	1,175								1,175
Net (loss) gain on pension benefit obligation	(86)				(86)			(86)
Currency translation, net	(19,203)					(14,555)		(14,555)	(4,648)
Interest rate hedge, net	(206)						(206)	(206)
Net Income	11,203			9,658				9,658	1,545
Balance at Dec. 31, 2011	104,785	80,502	23,387	(28,544)	(170)	(14,378)	(206)	60,591	44,194
Balance (in shares) at Dec. 31, 2011		23,515,000
Public stock offering	75,532	75,532						75,532
Public stock offering (in shares)		5,290,000
Exercise of Common Stock options for cash	774	1,035	(261)					774
Exercise of Common Stock options for cash (in shares)	176,896	177,000
Common Stock issued to Board of Directors and employees	429	429						429
Common Stock issued to Board of Directors and employees (in shares)		155,000
Tax benefit from Exercises of Common Stock options	171		171					171
Stock option compensation	823		823					823
Convertible preferred stock dividends	(6,711)			(6,711)				(6,711)
Preferred stock principal paid in common stock	7,780	7,780						7,780
Preferred stock principal paid in common stock (Shares)		601,000
Preferred stock dividend paid in common stock	1,031	1,031						1,031
Preferred stock dividend paid in common stock (Shares)		80,000
Proceeds from subsidiary issuance of equity shares	1,921								1,921
Distribution paid to non-controlling interest	(290)								(290)
Net (loss) gain on pension benefit obligation	(1,032)				(1,032)			(1,032)
Currency translation, net	5,647					4,573		4,573	1,074
Interest rate hedge, net	(18)						(18)	(18)
Net Income	24,321			17,872				17,872	6,449
Balance at Dec. 31, 2012	215,163	166,309	24,120	(17,383)	(1,202)	(9,805)	(224)	161,815	53,348
Balance (in shares) at Dec. 31, 2012		29,818,000
Exercise of Common Stock options for cash	4,801	6,624	(1,823)					4,801
Exercise of Common Stock options for cash (in shares)	672,753	673,000
Common Stock issued to Board of Directors and employees	1,509	1,509						1,509
Common Stock issued to Board of Directors and employees (in shares)		184,000
Tax benefit from Exercises of Common Stock options	2,074		2,074					2,074
Stock option compensation	1,127		1,127					1,127
Convertible preferred stock dividends	(1,622)			(1,622)				(1,622)
Distribution paid to non-controlling interest	(6)			(3)				(3)	(3)
Net (loss) gain on pension benefit obligation	144				144			144
Currency translation, net	4,157					5,741		5,741	223
Interest rate hedge, net	143						143	143
Net Income	35,133			33,820				33,820	1,313
Acquisition of non-controlling interest	(45,637)	42,517	(35,080)					7,437	(54,881)
Acquisition of non-controlling interest (in shares)		3,300,000
Stock issued upon conversion of preferred stock	15,108	15,108						15,108
Stock issued upon conversion of preferred stock (in shares)		954,000
Balance at Dec. 31, 2013	$ 232,094	$ 232,067	$ (9,582)	$ 14,812	$ (1,058)	$ (4,064)	$ (81)	$ 232,094
Balance (in shares) at Dec. 31, 2013		34,929,000