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Summary of Significant Accounting Policies (Tables)
 3 Months Ended
Mar. 31, 2015
Accounting Policies [Abstract]  
Components of inventories
Inventories consisted of the following:
 
March 31,
2015
 
December 31,
2014
Raw materials and parts
$
100,936

 
$
97,969

Work-in-progress
43,144

 
34,973

Finished goods
74,583

 
71,589

 
$
218,663

 
$
204,531
Components of other intangible assets
Other intangible assets consisted of the following:
 
March 31, 2015
 
December 31, 2014
 
Gross
Amount
 
Accumulated
Amortization
 
Intangibles, Net
 
Gross
Amount
 
Accumulated
Amortization
 
Intangibles, Net
Customer relationships
$
96,967

 
$
(28,258
)
 
$
68,709

 
$
98,325

 
$
(28,159
)
 
$
70,166

Proven technology and patents
45,546

 
(31,127
)
 
14,419

 
45,588

 
(30,761
)
 
14,827

Tradename (finite life)
4,115

 
(1,953
)
 
2,162

 
4,140

 
(1,786
)
 
2,354

Tradename (indefinite life)
24,810

 
—

 
24,810

 
24,947

 
—

 
24,947

Other
1,550

 
(1,174
)
 
376

 
1,573

 
(1,083
)
 
490

 
$
172,988

 
$
(62,512
)
 
$
110,476

 
$
174,573

 
$
(61,789
)
 
$
112,784