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Summary of Significant Accounting Policies (Tables)
 3 Months Ended
Mar. 31, 2017
Accounting Policies [Abstract]  
Components of inventories
Inventories consisted of the following:
 
March 31,
2017
 
December 31,
2016
Raw materials and parts
$
107,256

 
$
100,408

Work-in-progress
46,369

 
41,454

Finished goods
88,750

 
80,185

 
$
242,375

 
$
222,047
Components of other intangible assets
Other intangible assets consisted of the following:
 
March 31, 2017
 
December 31, 2016
 
Gross
Amount
 
Accumulated
Amortization
 
Intangibles, Net
 
Gross
Amount
 
Accumulated
Amortization
 
Intangibles, Net
Customer relationships
$
147,776

 
$
(36,190
)
 
$
111,586

 
$
147,466

 
$
(34,672
)
 
$
112,794

Proven technology and patents
59,057

 
(35,981
)
 
23,076

 
58,394

 
(35,128
)
 
23,266

Tradename (finite life)
4,296

 
(2,738
)
 
1,558

 
4,182

 
(2,514
)
 
1,668

Tradename (indefinite life)
28,339

 
—

 
28,339

 
28,272

 
—

 
28,272

Other
2,884

 
(1,967
)
 
917

 
2,871

 
(1,816
)
 
1,055

 
$
242,352

 
$
(76,876
)
 
$
165,476

 
$
241,185

 
$
(74,130
)
 
$
167,055