Annual report pursuant to Section 13 and 15(d)

EQUIPMENT AND PROPERTY (Details)

v3.6.0.2
EQUIPMENT AND PROPERTY (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Property, Plant and Equipment [Line Items]      
Net equipment and property $ 133,477 $ 121,356  
Depreciation expense 24,725 19,354 $ 16,627
Foreign Countries [Member]      
Property, Plant and Equipment [Line Items]      
Net equipment and property 4,600 3,400  
Building [Member]      
Property, Plant and Equipment [Line Items]      
Gross equipment and property 50,119 49,282  
Operating Equipment [Member]      
Property, Plant and Equipment [Line Items]      
Gross equipment and property 82,196 83,591  
Furniture and Fixtures [Member]      
Property, Plant and Equipment [Line Items]      
Gross equipment and property 16,255 15,168  
Computer Equipment and Systems [Member]      
Property, Plant and Equipment [Line Items]      
Gross equipment and property 150,661 116,823  
Plant and Equipment [Member]      
Property, Plant and Equipment [Line Items]      
Gross equipment and property 299,231 264,864  
Less--Accumulated Depreciation (190,279) (167,998)  
Net equipment and property 108,952 96,866  
Land [Member]      
Property, Plant and Equipment [Line Items]      
Gross equipment and property $ 24,525 $ 24,490