Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Schedule of Line of Credit Facilities [Table Text Block]

Our available lines of credit, outstanding standby LOCs, and performance bonds were as follows:

	March 31, 2017			December 31, 2016
	(in thousands)
Credit facilities
Multicurrency revolving line of credit	$	500,000		$	500,000
Long-term borrowings	(99,125		)	(97,167		)
Standby LOCs issued and outstanding	(29,205		)	(46,103		)
Net available for additional borrowings under the multi-currency revolving line of credit	$	371,670		$	356,730
Net available for additional standby LOCs under sub-facility	220,795			203,897
Unsecured multicurrency revolving lines of credit with various financial institutions
Multicurrency revolving lines of credit	$	93,230		$	91,809
Standby LOCs issued and outstanding	(21,332		)	(21,734		)
Short-term borrowings	(235		)	(69		)
Net available for additional borrowings and LOCs	$	71,663		$	70,006
Unsecured surety bonds in force	$	48,080		$	48,221

Schedule of Warranty Accruals [Table Text Block]

A summary of the warranty accrual account activity is as follows:

	Three Months Ended March 31,
	2017			2016
	(in thousands)
Beginning balance	$	43,302		$	54,512
New product warranties	2,361			2,404
Other adjustments and expirations	1,682			1,034
Claims activity	(6,351		)	(7,390		)
Effect of change in exchange rates	542			182
Ending balance	41,536			50,742
Less: current portion of warranty	23,500			32,244
Long-term warranty	$	18,036		$	18,498

Warranty Expense [Table Text Block]

Warranty expense was as follows:

	Three Months Ended March 31,
	2017		2016
	(in thousands)
Total warranty expense	$	4,043	$	3,438

Schedule of Changes to Unearned Revenue for Extended Warranty [Table Text Block]

A summary of changes to unearned revenue for extended warranty contracts is as follows:

	Three Months Ended March 31,
	2017			2016
	(in thousands)
Beginning balance	$	31,549		$	33,654
Unearned revenue for new extended warranties	322			581
Unearned revenue recognized	(1,005		)	(857		)
Effect of change in exchange rates	32			120
Ending balance	30,898			33,498
Less: current portion of unearned revenue for extended warranty	4,304			3,750
Long-term unearned revenue for extended warranty within other long-term obligations	$	26,594		$	29,748

Health Benefit Plan Costs and Incurred But Not Reported Accrual Balance [Table Text Block]

Plan costs were as follows:

	Three Months Ended March 31,
	2017		2016
	(in thousands)
Plan costs	$	8,754	$	6,774

The IBNR accrual, which is included in wages and benefits payable, was as follows:

	March 31, 2017		December 31, 2016
	(in thousands)
IBNR accrual	$	2,488	$	2,441