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Summary of Significant Accounting Policies (Tables)
 9 Months Ended
Sep. 30, 2017
Accounting Policies [Abstract]  
Components of inventories
Inventories consisted of the following:
 
September 30,
2017
 
December 31,
2016
Raw materials and parts
$
119,148

 
$
100,408

Work-in-progress
50,212

 
41,454

Finished goods
94,167

 
80,185

 
$
263,527

 
$
222,047
Components of other intangible assets
Other intangible assets consisted of the following:
 
September 30, 2017
 
December 31, 2016
 
Gross
Amount
 
Accumulated
Amortization
 
Intangibles, Net
 
Gross
Amount
 
Accumulated
Amortization
 
Intangibles, Net
Customer relationships
$
198,355

 
$
(39,757
)
 
$
158,598

 
$
147,466

 
$
(34,672
)
 
$
112,794

Proven technology and patents
70,169

 
(37,711
)
 
32,458

 
58,394

 
(35,128
)
 
23,266

Tradename (finite life)
4,486

 
(2,765
)
 
1,721

 
4,182

 
(2,514
)
 
1,668

Tradename (indefinite life)
35,603

 
—

 
35,603

 
28,272

 
—

 
28,272

Other
3,673

 
(2,078
)
 
1,595

 
2,871

 
(1,816
)
 
1,055

 
$
312,286

 
$
(82,311
)
 
$
229,975

 
$
241,185

 
$
(74,130
)
 
$
167,055