Quarterly report pursuant to Section 13 or 15(d)

Equity and Long-Term Incentive Compensation Plans - Employee Stock Purchase Plan (Details)

v3.8.0.1
Equity and Long-Term Incentive Compensation Plans - Employee Stock Purchase Plan (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Jan. 02, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
ESPP maximum employee subscription rate 10.00%   10.00%    
ESPP, offering period     6 months    
ESPP, discount from market price, lesser of commencement of offering period or purchase date     85.00%    
Employee Stock Purchase Plan Additional Information          
Total cash received from employees for the issuance of shares under the ESPP $ 20,579 $ 23,694 $ 20,579 $ 23,694  
Number of shares purchased by employees through the ESPP (in shares) 264,000 384,000 264,000 384,000  
Tax benefits realized by the Company in connection with the disqualifying dispositions of shares purchased under the ESPP $ 47 $ 218 $ 894 $ 922  
Weighted-average fair value per share based on Black-Scholes model (in dollars per share) $ 19.04 $ 14.05 $ 19.04 $ 14.05  
ESPP maximum annual share replenishment (in shares) 2,000,000   2,000,000    
Number of ESPP shares available for future issuance (in shares) 2,400,000   2,400,000    
Employee Stock Purchase Plan          
ESPP, Fair Value Assumptions and Methodology          
Expected stock price volatility 25.90% 20.60% 25.90% 20.60%  
Risk-free interest rate 0.90% 0.40% 0.90% 0.40%  
Dividend yield 2.60% 3.00% 2.60% 3.00%  
Expected life (in years) 6 months 6 months 6 months 6 months  
Subsequent Event          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
ESPP maximum employee subscription rate         15.00%