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Supplemental Cash Flow Information (Tables)
 12 Months Ended
Dec. 31, 2015
Supplemental Cash Flow Elements [Abstract]  
Supplemental Information About Cash Flows

The following table summarizes, in thousands, supplemental information about our cash flows for the years ended December 31, 2015, 2014 and 2013:

 

     Years Ended December 31,  
     2015      2014      2013  

SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:

         

Cash paid for interest

    $ 141,048       $ 231,946       $ 220,730   

Cash paid for income taxes, net of $7,500, $13,336 and $5,822 for refunds in 2015, 2014 and 2013

    $ 108,090       $ 93,875       $ 67,759   

SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING ACTIVITIES:

         

Acquisition of property through accounts payable commitments

    $ 9,006       $ 20,275       $ 15,200   

Contingent consideration liability

    $ 5,388       $ —         $ —     

SUPPLEMENTAL DISCLOSURE OF NONCASH FINANCING ACTIVITIES:

         

Net settlement of stock options exercised

    $ —         $ 10       $ 644   

Net settlement of shares issued from the deferred compensation plan

    $ 2,949       $ 527       $ 792   

Vesting of restricted stock

    $ 2,742       $ —         $ —     

Accrued dividends

    $ 1,419       $ 63       $ —