Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 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:

	June 30, 2017			December 31, 2016
	(in thousands)
Credit facilities
Multicurrency revolving line of credit	$	500,000		$	500,000
Long-term borrowings	(122,497		)	(97,167		)
Standby LOCs issued and outstanding	(28,723		)	(46,103		)
Net available for additional borrowings under the multi-currency revolving line of credit	$	348,780		$	356,730
Net available for additional standby LOCs under sub-facility	221,277			203,897
Unsecured multicurrency revolving lines of credit with various financial institutions
Multicurrency revolving lines of credit	$	106,113		$	91,809
Standby LOCs issued and outstanding	(22,838		)	(21,734		)
Short-term borrowings	(1,094		)	(69		)
Net available for additional borrowings and LOCs	$	82,181		$	70,006
Unsecured surety bonds in force	$	48,879		$	48,221

Schedule of Warranty Accruals [Table Text Block]

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

	Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
	(in thousands)
Beginning balance	$	41,536		$	50,742		$	43,302		$	54,512
New product warranties	1,568			1,501			3,929			3,905
Other adjustments and expirations	219			1,001			1,901			2,035
Claims activity	(4,248		)	(7,613		)	(10,599		)	(15,003		)
Effect of change in exchange rates	735			(174		)	1,277			8
Ending balance	39,810			45,457			39,810			45,457
Less: current portion of warranty	25,584			26,825			25,584			26,825
Long-term warranty	$	14,226		$	18,632		$	14,226		$	18,632

Warranty Expense [Table Text Block]

Warranty expense was as follows:

	Three Months Ended June 30,					Six Months Ended June 30,
	2017			2016		2017			2016
	(in thousands)
Total warranty expense	$	(6,213	)	$	2,502	$	(2,170	)	$	5,940

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 June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
	(in thousands)
Beginning balance	$	30,898		$	33,498		$	31,549		$	33,654
Unearned revenue for new extended warranties	382			433			704			1,014
Unearned revenue recognized	(1,062		)	(878		)	(2,067		)	(1,735		)
Effect of change in exchange rates	53			15			85			135
Ending balance	30,271			33,068			30,271			33,068
Less: current portion of unearned revenue for extended warranty	4,325			3,951			4,325			3,951
Long-term unearned revenue for extended warranty within other long-term obligations	$	25,946		$	29,117		$	25,946		$	29,117

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

Plan costs were as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2017		2016		2017		2016
	(in thousands)
Plan costs	$	6,742	$	6,859	$	15,496	$	13,633

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

	June 30, 2017		December 31, 2016
	(in thousands)
IBNR accrual	$	2,650	$	2,441