Debt - Term Loan - Narrative (Details)
3 Months Ended
Nov. 03, 2015
USD ($)
extension_option
Mar. 31, 2017
USD ($)
Jun. 30, 2016
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Debt Instrument [Line Items]          
Number of one-year extension options | extension_option 2        
Unamortized deferred financing costs   $ 35,086,000   $ 37,111,000  
Term Loan          
Debt Instrument [Line Items]          
Total debt, gross $ 325,000,000     420,000,000 $ 370,000,000
Accordian feature maximum borrowing capacity 600,000,000.0        
Days available to reborrow loans repaid (in days)   30 days      
Period subject to reborrowing occurrence limitations (in months)   12 months      
Origination costs $ 2,400,000        
Unamortized deferred financing costs   $ 1,300,000   $ 1,500,000  
Term Loan | LIBOR          
Debt Instrument [Line Items]          
Basis spread on variable rate (as a percent)   1.347%      
Minimum | Term Loan | LIBOR          
Debt Instrument [Line Items]          
Basis spread on variable rate (as a percent) 1.35%        
Minimum | Term Loan | Base Rate          
Debt Instrument [Line Items]          
Basis spread on variable rate (as a percent) 0.35%        
Maximum | Term Loan | LIBOR          
Debt Instrument [Line Items]          
Basis spread on variable rate (as a percent) 1.80%        
Maximum | Term Loan | Base Rate          
Debt Instrument [Line Items]          
Basis spread on variable rate (as a percent) 0.80%        
Achievement of Two of Three Credit Ratings, S&P at least BBB-, Fitch at least BBB-, Moody's at least Baa3 | Minimum | Term Loan | LIBOR          
Debt Instrument [Line Items]          
Basis spread on variable rate (as a percent)     0.90%    
Achievement of Two of Three Credit Ratings, S&P at least BBB-, Fitch at least BBB-, Moody's at least Baa3 | Minimum | Term Loan | Base Rate          
Debt Instrument [Line Items]          
Basis spread on variable rate (as a percent)     0.00%    
Achievement of Two of Three Credit Ratings, S&P at least BBB-, Fitch at least BBB-, Moody's at least Baa3 | Maximum | Term Loan | LIBOR          
Debt Instrument [Line Items]          
Basis spread on variable rate (as a percent)     1.75%    
Achievement of Two of Three Credit Ratings, S&P at least BBB-, Fitch at least BBB-, Moody's at least Baa3 | Maximum | Term Loan | Base Rate          
Debt Instrument [Line Items]          
Basis spread on variable rate (as a percent)     0.75%