XML 13 R3.htm IDEA: XBRL DOCUMENT v3.8.0.1
Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Assets:    
Property, plant and equipment, accumulated depreciation $ 1,019,845 $ 842,186
Intangible assets, accumulated amortization $ 364,842 $ 301,187
Stockholders’ equity:    
Common stock, par value (in usd per share) $ 0.01 $ 0.01
Common stock, shares authorized 250,000,000 250,000,000
Common stock, shares issued 167,843,895 167,641,415
Treasury stock, shares 3,185,406 3,028,857