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Summary of Significant Accounting Policies (Tables)
 6 Months Ended
Jun. 30, 2014
Accounting Policies [Abstract]  
Components of inventories
Inventories consisted of the following:
 
June 30,
2014
 
December 31,
2013
Raw materials and parts
$
101,373

 
$
98,244

Work-in-progress
41,242

 
38,061

Finished goods
81,833

 
74,109

 
$
224,448

 
$
210,414
Components of other intangible assets
Other intangible assets consisted of the following:
 
June 30, 2014
 
December 31, 2013
 
Gross
Amount
 
Accumulated
Amortization
 
Intangibles, Net
 
Gross
Amount
 
Accumulated
Amortization
 
Intangibles, Net
Customer relationships
$
100,342

 
$
(27,009
)
 
$
73,333

 
$
98,374

 
$
(25,313
)
 
$
73,061

Proven technology and patents
43,086

 
(30,554
)
 
12,532

 
43,233

 
(29,763
)
 
13,470

Tradename (finite life)
4,375

 
(1,832
)
 
2,543

 
4,300

 
(1,619
)
 
2,681

Tradename (indefinite life)
25,105

 
—

 
25,105

 
25,108

 
—

 
25,108

Other
1,599

 
(855
)
 
744

 
757

 
(659
)
 
98

 
$
174,507

 
$
(60,250
)
 
$
114,257

 
$
171,772

 
$
(57,354
)
 
$
114,418
Changes to the Company's accrual for product warranties
Changes to the Company’s accrual for product warranties for the six months ended June 30 are as follows:
 
June 30,
2014
 
June 30,
2013
Balance at beginning of period
$
16,991

 
$
16,295

Accruals for warranties
9,427

 
9,467

Foreign currency translation
(3
)
 
(185
)
Payments / utilizations
(9,914
)
 
(9,815
)
Balance at end of period
$
16,501

 
$
15,762