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Summary of Significant Accounting Policies (Tables)
 6 Months Ended
Jun. 30, 2015
Accounting Policies [Abstract]  
Components of inventories
Inventories consisted of the following:
 
June 30,
2015
 
December 31,
2014
Raw materials and parts
$
100,031

 
$
97,969

Work-in-progress
41,625

 
34,973

Finished goods
81,619

 
71,589

 
$
223,275

 
$
204,531
Components of other intangible assets
Other intangible assets consisted of the following:
 
June 30, 2015
 
December 31, 2014
 
Gross
Amount
 
Accumulated
Amortization
 
Intangibles, Net
 
Gross
Amount
 
Accumulated
Amortization
 
Intangibles, Net
Customer relationships
$
97,396

 
$
(29,098
)
 
$
68,298

 
$
98,325

 
$
(28,159
)
 
$
70,166

Proven technology and patents
46,012

 
(31,890
)
 
14,122

 
45,588

 
(30,761
)
 
14,827

Tradename (finite life)
4,317

 
(2,230
)
 
2,087

 
4,140

 
(1,786
)
 
2,354

Tradename (indefinite life)
24,775

 
—

 
24,775

 
24,947

 
—

 
24,947

Other
1,555

 
(1,181
)
 
374

 
1,573

 
(1,083
)
 
490

 
$
174,055

 
$
(64,399
)
 
$
109,656

 
$
174,573

 
$
(61,789
)
 
$
112,784
Changes to the Company's accrual for product warranties
.