Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2018

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, 2018			December 31, 2017
	(in thousands)
Credit facilities
Multicurrency revolving line of credit	$	500,000		$	500,000
Long-term borrowings	(95,777		)	(125,414		)
Standby LOCs issued and outstanding	(46,359		)	(31,881		)
Net available for additional borrowings under the multi-currency revolving line of credit	$	357,864		$	342,705
Net available for additional standby LOCs under sub-facility	253,641			218,119
Unsecured multicurrency revolving lines of credit with various financial institutions
Multicurrency revolving lines of credit	$	114,160		$	110,477
Standby LOCs issued and outstanding	(21,471		)	(21,030		)
Short-term borrowings	(1,776		)	(916		)
Net available for additional borrowings and LOCs	$	90,913		$	88,531
Unsecured surety bonds in force	$	52,639		$	51,344

Schedule of Warranty Accruals [Table Text Block]

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

	Three Months Ended March 31,
	2018			2017
	(in thousands)
Beginning balance	$	34,862		$	43,302
Assumed liabilities from acquisition	5,742			—
New product warranties	818			2,361
Other adjustments and expirations	4,044			1,682
Claims activity	(4,108		)	(6,351		)
Effect of change in exchange rates	621			542
Ending balance	41,979			41,536
Less: current portion of warranty	26,533			23,500
Long-term warranty	$	15,446		$	18,036

Warranty Expense [Table Text Block]

Warranty expense was as follows:

	Three Months Ended March 31,
	2018		2017
	(in thousands)
Total warranty expense	$	4,862	$	4,043

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

Plan costs were as follows:

	Three Months Ended March 31,
	2018		2017
	(in thousands)
Plan costs	$	8,680	$	8,754

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

	March 31, 2018		December 31, 2017
	(in thousands)
IBNR accrual	$	2,911	$	2,664