Annual report pursuant to Section 13 and 15(d)

ACQUISITIONS (Details)

v3.6.0.2
ACQUISITIONS (Details)
$ / shares in Units, $ in Thousands
 12 Months Ended
Aug. 01, 2014
$ / shares
shares
Dec. 31, 2016
USD ($)
Number
Dec. 31, 2015
USD ($)
Number
Dec. 31, 2014
USD ($)
Number
No. of acquisitions | Number   34 12 21
Cash Purchase Price for the Company's acquisitions   $ 46,300 $ 33,500  
Materials and supplies   13,724 12,801  
Equipment and property, net   133,477 121,356  
Goodwill   255,665 249,939 $ 255,563
Customer contracts   117,466 92,815  
Other intangible assets   44,310 46,116  
Current liabilities   276,991 252,986  
Business Acquisitions [Member]        
Accounts receivable, net   3,334 1,711  
Materials and supplies   353 71  
Equipment and property, net   4,525 948  
Goodwill   8,613 196  
Customer contracts   49,365 12,398  
Other intangible assets   1,285 20,092  
Current liabilities   10,809 2,329  
Other assets and liabilities, net   (2,739) 460  
Total consideration paid   53,927 33,547  
Less: Contingent consideration liability   (7,619) (85)  
Total cash purchase price for the Company's acquisitions   $ 46,308 $ 33,462  
PermaTreat [Member]        
Business acquisition, shares issued | shares 873,349      
Share issue price per share | $ / shares $ 18.79