Components of Accumulated Other Comprehensive Loss (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Selling, general and administrative expenses	$ 200,391	$ 242,112	$ 284,737
Total costs and expenses	1,387,754	1,634,556	1,997,001
Income from continuing operations before income taxes and equity loss	(79,471)	34,815	14,138
Income tax expense	6,637	27,678	30,366
Net Loss	79,753	(6,332)	$ 17,676
Total amounts reclassified from accumulated other comprehensive loss in connection with loss on dilution and sale of equity method investment	(28,743)
Cumulative Unrecognized Actuarial Losses on Pension Obligations
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Total amounts reclassified from accumulated other comprehensive loss in connection with loss on dilution and sale of equity method investment	1,534
Effective Portion of Derivatives Designated as Hedging Instruments
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Total amounts reclassified from accumulated other comprehensive loss in connection with loss on dilution and sale of equity method investment	(1,636)
Cumulative Foreign Exchange Translation Adjustments
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Total amounts reclassified from accumulated other comprehensive loss in connection with loss on dilution and sale of equity method investment	(28,641)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Total before tax	45,565
Income tax expense	(16,822)
Total amounts reclassified from accumulated other comprehensive loss in connection with loss on dilution and sale of equity method investment	(28,743)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Cumulative Unrecognized Actuarial Losses on Pension Obligations
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Total costs and expenses	18,102	22,063
Income tax expense	(2,091)	(1,873)
Net Loss	16,011	20,190
Reclassification out of Accumulated Other Comprehensive Income [Member] | Amortization of Actuarial Losses
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Selling, general and administrative expenses	8,490	15,810
Cost of services and products sold	9,005	5,984
Reclassification out of Accumulated Other Comprehensive Income [Member] | Amortization of Prior Service Costs
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Selling, general and administrative expenses	(11)	121
Cost of services and products sold	263	148
Reclassification out of Accumulated Other Comprehensive Income [Member] | Settlement/Curtailment Losses [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Selling, general and administrative expenses	355	0
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Total before tax	45,405
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Total before tax	2,593
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Total before tax	(2,433)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Foreign Exchange Forward | Effective Portion of Derivatives Designated as Hedging Instruments
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Revenues	(408)	0
Cost of services and products sold	(2)	81
Income from continuing operations before income taxes and equity loss	(410)	81
Income tax expense	147	(28)
Net Loss	(263)	53
Reclassification out of Accumulated Other Comprehensive Income [Member] | Foreign Exchange Contract [Member] | Cumulative Foreign Exchange Translation Adjustments
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Other Expenses	1,157	0
Income tax expense	0	0
Net Loss	$ 1,157	$ 0