v3.2.0.727
Credit Facility And Long Term Debt (Detail) - USD ($)
$ in Thousands
 1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Dec. 31, 2012
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2012
Mar. 31, 2015
Dec. 31, 2014
Debt Disclosure [Line Items]                
Proceeds from Lines of Credit       $ 300,000 $ 0      
Payments on revolving credit facility       0 (100,000)      
Deferred Finance Costs, Net   $ 2,900   $ 2,900        
Commitment fee as percentage of the committed line amount less outstanding borrowings and letters of credit       15.00%        
Line of Credit Facility, Unused Borrowing Capacity   300,000   $ 300,000        
Long term debt agreements principal outstanding   700 $ 3,400 700 3,400     $ 2,000
Repayments of Long-term Debt       18,461 6,286      
Interest Income (Expense), Net   $ (4,262) $ (1,227) $ (6,472) $ (2,073)      
LIBOR Rate [Member]                
Debt Disclosure [Line Items]                
Interest rate margin, minimum   1.00%   1.00%        
Interest rate margin, maximum   1.25%   1.25%        
Prime Rate [Member]                
Debt Disclosure [Line Items]                
Interest rate margin, minimum   0.00%   0.00%        
Interest rate margin, maximum   0.25%   0.25%        
Long-term Debt [Member]                
Debt Disclosure [Line Items]                
Weighted Average Interest Rate   3.20% 3.10% 3.10% 3.20%      
Revolving Credit Facility [Member]                
Debt Disclosure [Line Items]                
Weighted Average Interest Rate   1.31%   1.31%        
New Term Loan [Member]                
Debt Disclosure [Line Items]                
Weighted Average Interest Rate   1.31%   1.31%        
Delayed Draw Term Loan [Member]                
Debt Disclosure [Line Items]                
Weighted Average Interest Rate   1.31%   1.25%        
Initial Term Loan [Member]                
Debt Disclosure [Line Items]                
Weighted Average Interest Rate   1.31%   1.25%        
Term Loan Facility [Member]                
Debt Disclosure [Line Items]                
Line of Credit Facility, Amount Outstanding             $ 400,000  
Revolving Credit Facility [Member]                
Debt Disclosure [Line Items]                
Credit facility maximum borrowing capacity   $ 800,000   $ 800,000        
Line of Credit Facility, Initial Borrowing Capacity   400,000   400,000        
Line of Credit Facility, Amount Outstanding   300,000   300,000     250,000  
Letter of Credit [Member]                
Debt Disclosure [Line Items]                
Credit facility maximum borrowing capacity   50,000   50,000        
Swingline Loan [Member]                
Debt Disclosure [Line Items]                
Credit facility maximum borrowing capacity   $ 50,000   $ 50,000        
New Term Loan [Member]                
Debt Disclosure [Line Items]                
Line of Credit Facility, Amount Outstanding             $ 150,000  
Secured Debt [Member]                
Debt Disclosure [Line Items]                
Debt Facility Term Period 7 years              
Weighted Average Interest Rate   1.70% 1.70% 1.70% 1.70%      
Debt Instrument, Maturity Date Dec. 01, 2019              
Secured Debt $ 50,000 $ 45,000 $ 47,000 $ 45,000 $ 47,000 $ 50,000   $ 46,000
Secured Debt [Member] | LIBOR Rate [Member]                
Debt Disclosure [Line Items]                
Debt Instrument, Basis Spread on Variable Rate           1.50%    
Debt [Member]                
Debt Disclosure [Line Items]                
Line of Credit Facility, Covenant Terms       3.25        
EBITDA [Member]                
Debt Disclosure [Line Items]                
Line of Credit Facility, Covenant Terms       1.00        
EBITDA [Member]                
Debt Disclosure [Line Items]                
Line of Credit Facility, Covenant Terms       3.50        
Interest Expense [Member]                
Debt Disclosure [Line Items]                
Line of Credit Facility, Covenant Terms       1.00