Pension and Postretirement Benefits (Details 1) (USD $)	12 Months Ended													12 Months Ended
	Dec. 31, 2012 Funded Plans [Member]	Dec. 31, 2011 Funded Plans [Member]	Dec. 31, 2012 Unfunded Pension Plans [Member]	Dec. 31, 2011 Unfunded Pension Plans [Member]	Dec. 31, 2012 Postretirement Benefit Plans [Member]	Dec. 31, 2011 Postretirement Benefit Plans [Member]	Dec. 31, 2010 Postretirement Benefit Plans [Member]	Dec. 31, 2012 Foreign Pension Plans [Member]	Dec. 31, 2011 Foreign Pension Plans [Member]	Dec. 31, 2010 Foreign Pension Plans [Member]	Dec. 31, 2012 Foreign Pension Plans [Member] Funded Plans [Member]	Dec. 31, 2011 Foreign Pension Plans [Member] Funded Plans [Member]	May 31, 2011 Foreign Pension Plans [Member] Funded Plans [Member]	Dec. 31, 2012 Foreign Pension Plans [Member] Unfunded Pension Plans [Member]	Dec. 31, 2011 Foreign Pension Plans [Member] Unfunded Pension Plans [Member]	May 31, 2011 Foreign Pension Plans [Member] Unfunded Pension Plans [Member]
Change in benefit obligation:
Benefit obligation at beginning of year	$ 13,938,000	$ 12,853,000	$ 10,883,000	$ 10,352,000	$ 18,667,000	$ 18,987,000					$ 13,141,000	$ 11,453,000		$ 2,939,000	$ 2,929,000
Service cost	0		104,000	121,000	146,000	128,000	130,000	491,000	366,000	304,000	491,000	366,000
Interest cost	659,000	678,000	491,000	511,000	814,000	868,000	1,039,000	737,000	729,000	780,000	607,000	583,000		130,000	146,000
Recognized net actuarial loss	1,419,000	1,157,000	799,000	609,000	547,000	533,000	608,000	201,000	73,000	54,000	(1,086,000)	(1,421,000)		(113,000)	(173,000)
Plan amendments	0		0		0
Benefits paid	(668,000)	(750,000)	(707,000)	(710,000)	(1,176,000)	(1,422,000)					(328,000)	(351,000)		(220,000)	(231,000)
Translation adjustment											390,000	(331,000)		70,000	(78,000)
Benefit obligation at end of year	15,348,000	13,938,000	11,570,000	10,883,000	18,701,000	18,667,000	18,987,000				15,387,000	13,141,000		3,032,000	2,939,000
Change in plan assets:
Fair value of plan assets at beginning of year	9,846,000	8,858,000			2,118,000	2,678,000		11,028,000			11,208,000	10,834,000
Actual return on plan assets	683,000	741,000			100,000	217,000					860,000	100,000
Company contributions	763,000	997,000	707,000	710,000	355,000	645,000					1,111,000	709,000		220,000	231,000
Benefits paid	(668,000)	(750,000)	(707,000)	(710,000)	(1,176,000)	(1,422,000)					(328,000)	(351,000)		(220,000)	(231,000)
Translation adjustment											326,000	(264,000)
Fair value of plan assets at end of year	10,624,000	9,846,000			1,397,000	2,118,000	2,678,000	12,997,000	11,028,000		12,997,000	11,208,000
Funded status at end of year	$ (4,724,000)	$ (4,092,000)	$ (11,570,000)	$ (10,883,000)	$ (17,304,000)	$ (16,549,000)					$ (2,390,000)		$ (2,113,000)	$ (3,032,000)		$ (2,939,000)