Goodwill and Intangible Assets (Noncurrent Intangible Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired	$ 6,178
Gross carrying amount:
Gross carrying amount, Beginning balance	42,392	$ 43,412
FX adjustments and other	(1,444)	(502)
Gross carrying amount, Ending balance	47,126	42,392	$ 43,412
Accumulated amortization:
Accumulated amortization, Beginning balance	(35,708)	(33,973)
Amortization expense	(1,832)	(2,458)	(3,500)
FX adjustments and other	1,412	477
Accumulated amortization, Ending balance	(36,128)	(35,708)	(33,973)
Net carrying amount:
Net carrying amount, Beginning balance	6,684
Net carrying amount, Ending balance	10,998	6,684
TJG Holdings LLC [Member]
Gross carrying amount:
Disposition of assets		(518)
Accumulated amortization:
Disposition of assets		246
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired	0
Gross carrying amount:
Gross carrying amount, Beginning balance	37,784	38,496
FX adjustments and other	(1,211)	(421)
Gross carrying amount, Ending balance	36,573	37,784	38,496
Accumulated amortization:
Accumulated amortization, Beginning balance	(31,246)	(29,496)
Amortization expense	(1,414)	(2,211)
FX adjustments and other	1,179	397
Accumulated amortization, Ending balance	(31,481)	(31,246)	(29,496)
Net carrying amount:
Net carrying amount, Beginning balance	6,538
Net carrying amount, Ending balance	$ 5,092	6,538
Customer Relationships | Minimum [Member]
Net carrying amount:
Estimated useful life (years)	6 years
Customer Relationships | Maximum [Member]
Net carrying amount:
Estimated useful life (years)	20 years
Customer Relationships | TJG Holdings LLC [Member]
Gross carrying amount:
Disposition of assets		(291)
Accumulated amortization:
Disposition of assets		64
Trademarks
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired	$ 0
Gross carrying amount:
Gross carrying amount, Beginning balance	931	1,059
FX adjustments and other	(78)	(27)
Gross carrying amount, Ending balance	853	931	1,059
Accumulated amortization:
Accumulated amortization, Beginning balance	(881)	(869)
Amortization expense	(50)	(125)
FX adjustments and other	78	26
Accumulated amortization, Ending balance	(853)	(881)	(869)
Net carrying amount:
Net carrying amount, Beginning balance	50
Net carrying amount, Ending balance	$ 0	50
Estimated useful life (years)	6 years
Trademarks | TJG Holdings LLC [Member]
Gross carrying amount:
Disposition of assets		(101)
Accumulated amortization:
Disposition of assets		87
Non- compete Agreements
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired	$ 0
Gross carrying amount:
Gross carrying amount, Beginning balance	1,477	1,657
FX adjustments and other	(155)	(54)
Gross carrying amount, Ending balance	1,322	1,477	1,657
Accumulated amortization:
Accumulated amortization, Beginning balance	(1,381)	(1,408)
Amortization expense	(96)	(122)
FX adjustments and other	155	54
Accumulated amortization, Ending balance	(1,322)	(1,381)	(1,408)
Net carrying amount:
Net carrying amount, Beginning balance	96
Net carrying amount, Ending balance	$ 0	96
Non- compete Agreements | Minimum [Member]
Net carrying amount:
Estimated useful life (years)	1 year
Non- compete Agreements | Maximum [Member]
Net carrying amount:
Estimated useful life (years)	5 years
Non- compete Agreements | TJG Holdings LLC [Member]
Gross carrying amount:
Disposition of assets		(126)
Accumulated amortization:
Disposition of assets		95
Software
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired	$ 5,901
Gross carrying amount:
Gross carrying amount, Beginning balance	0	0
FX adjustments and other	0	0
Gross carrying amount, Ending balance	5,901	0	0
Accumulated amortization:
Accumulated amortization, Beginning balance	0	0
Amortization expense	(272)	0
FX adjustments and other	0	0
Accumulated amortization, Ending balance	(272)	0	0
Net carrying amount:
Net carrying amount, Beginning balance	0
Net carrying amount, Ending balance	$ 5,629	0
Estimated useful life (years)	4 years
Software | TJG Holdings LLC [Member]
Gross carrying amount:
Disposition of assets		0
Accumulated amortization:
Disposition of assets		0
Trade Names
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired	$ 277
Gross carrying amount:
Gross carrying amount, Beginning balance	2,200	2,200
FX adjustments and other	0	0
Gross carrying amount, Ending balance	2,477	2,200	2,200
Accumulated amortization:
Accumulated amortization, Beginning balance	(2,200)	(2,200)
Amortization expense	0	0
FX adjustments and other	0	0
Accumulated amortization, Ending balance	(2,200)	(2,200)	$ (2,200)
Net carrying amount:
Net carrying amount, Beginning balance	0
Net carrying amount, Ending balance	$ 277	0
Trade Names | Minimum [Member]
Net carrying amount:
Estimated useful life (years)	4 years
Trade Names | Maximum [Member]
Net carrying amount:
Estimated useful life (years)	5 years
Trade Names | TJG Holdings LLC [Member]
Gross carrying amount:
Disposition of assets		0
Accumulated amortization:
Disposition of assets		$ 0