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Summary of Significant Accounting Policies (Tables)
 6 Months Ended
Jun. 30, 2017
Accounting Policies [Abstract]  
Components of inventories
Inventories consisted of the following:
 
June 30,
2017
 
December 31,
2016
Raw materials and parts
$
113,113

 
$
100,408

Work-in-progress
50,245

 
41,454

Finished goods
90,376

 
80,185

 
$
253,734

 
$
222,047
Components of other intangible assets
Other intangible assets consisted of the following:
 
June 30, 2017
 
December 31, 2016
 
Gross
Amount
 
Accumulated
Amortization
 
Intangibles, Net
 
Gross
Amount
 
Accumulated
Amortization
 
Intangibles, Net
Customer relationships
$
148,275

 
$
(37,831
)
 
$
110,444

 
$
147,466

 
$
(34,672
)
 
$
112,794

Proven technology and patents
59,884

 
(37,365
)
 
22,519

 
58,394

 
(35,128
)
 
23,266

Tradename (finite life)
4,421

 
(2,725
)
 
1,696

 
4,182

 
(2,514
)
 
1,668

Tradename (indefinite life)
28,369

 
—

 
28,369

 
28,272

 
—

 
28,272

Other
3,042

 
(1,936
)
 
1,106

 
2,871

 
(1,816
)
 
1,055

 
$
243,991

 
$
(79,857
)
 
$
164,134

 
$
241,185

 
$
(74,130
)
 
$
167,055