Annual report pursuant to Section 13 and 15(d)

EQUIPMENT AND PROPERTY (Details)

v3.3.1.900
EQUIPMENT AND PROPERTY (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Property, Plant and Equipment [Line Items]      
Net equipment and property $ 121,356 $ 101,669  
Depreciation expense 19,354 16,627 $ 14,415
Foreign Countries [Member]      
Property, Plant and Equipment [Line Items]      
Net equipment and property 3,400 3,800  
Building [Member]      
Property, Plant and Equipment [Line Items]      
Gross equipment and property 49,282 48,440  
Operating Equipment [Member]      
Property, Plant and Equipment [Line Items]      
Gross equipment and property 83,591 79,235  
Furniture and Fixtures [Member]      
Property, Plant and Equipment [Line Items]      
Gross equipment and property 15,168 14,303  
Computer Equipment and Systems [Member]      
Property, Plant and Equipment [Line Items]      
Gross equipment and property 116,823 92,064  
Plant and Equipment [Member]      
Property, Plant and Equipment [Line Items]      
Gross equipment and property 264,864 234,042  
Less--Accumulated Depreciation (167,998) (156,940)  
Net equipment and property 96,866 77,102  
Land [Member]      
Property, Plant and Equipment [Line Items]      
Gross equipment and property $ 24,490 $ 24,567