Quarterly report pursuant to Section 13 or 15(d)

Change in Rate Based on Leverage Ratio (Detail)

v2.4.0.6
Change in Rate Based on Leverage Ratio (Detail)
Mar. 31, 2013
Debt Instrument [Line Items]  
Change in rate based on leverage ratio, contractual interest rate 9.625%
Less than 3.00 to 1.00 | Base Rate
 
Debt Instrument [Line Items]  
Change in rate based on leverage ratio, contractual interest rate 1.25%
Less than 3.00 to 1.00 | LIBOR Loans
 
Debt Instrument [Line Items]  
Change in rate based on leverage ratio, contractual interest rate 2.25%
Greater than or equal to 3.00 to 1.00 but less than 4.00 to 1.00 | Base Rate
 
Debt Instrument [Line Items]  
Change in rate based on leverage ratio, contractual interest rate 1.50%
Greater than or equal to 3.00 to 1.00 but less than 4.00 to 1.00 | LIBOR Loans
 
Debt Instrument [Line Items]  
Change in rate based on leverage ratio, contractual interest rate 2.50%
Greater than or equal to 4.00 to 1.00 but less than 5.00 to 1.00 | Base Rate
 
Debt Instrument [Line Items]  
Change in rate based on leverage ratio, contractual interest rate 1.75%
Greater than or equal to 4.00 to 1.00 but less than 5.00 to 1.00 | LIBOR Loans
 
Debt Instrument [Line Items]  
Change in rate based on leverage ratio, contractual interest rate 2.75%
Greater than or equal to 5.00 to 1.00 but less than 6.00 to 1.00 | Base Rate
 
Debt Instrument [Line Items]  
Change in rate based on leverage ratio, contractual interest rate 2.00%
Greater than or equal to 5.00 to 1.00 but less than 6.00 to 1.00 | LIBOR Loans
 
Debt Instrument [Line Items]  
Change in rate based on leverage ratio, contractual interest rate 3.00%
Greater than or equal to 6.00 to 1.00 | Base Rate
 
Debt Instrument [Line Items]  
Change in rate based on leverage ratio, contractual interest rate 2.50%
Greater than or equal to 6.00 to 1.00 | LIBOR Loans
 
Debt Instrument [Line Items]  
Change in rate based on leverage ratio, contractual interest rate 3.50%
Less than 3.25 to 1.00 | Base Rate
 
Debt Instrument [Line Items]  
Change in rate based on leverage ratio, contractual interest rate 0.75%
Less than 3.25 to 1.00 | Eurodollar Rate Loans
 
Debt Instrument [Line Items]  
Change in rate based on leverage ratio, contractual interest rate 2.25%
Less than 3.25 to 1.00 | Applicable Fee Rate
 
Debt Instrument [Line Items]  
Change in rate based on leverage ratio, contractual interest rate 0.40%
Greater than or equal to 3.25 to 1.00 but less than 4.50 to 1.00 | Base Rate
 
Debt Instrument [Line Items]  
Change in rate based on leverage ratio, contractual interest rate 0.75%
Greater than or equal to 3.25 to 1.00 but less than 4.50 to 1.00 | Eurodollar Rate Loans
 
Debt Instrument [Line Items]  
Change in rate based on leverage ratio, contractual interest rate 2.50%
Greater than or equal to 3.25 to 1.00 but less than 4.50 to 1.00 | Applicable Fee Rate
 
Debt Instrument [Line Items]  
Change in rate based on leverage ratio, contractual interest rate 0.50%
Greater than or equal to 4.50 to 1.00 but less than 6.00 to 1.00 | Base Rate
 
Debt Instrument [Line Items]  
Change in rate based on leverage ratio, contractual interest rate 1.25%
Greater than or equal to 4.50 to 1.00 but less than 6.00 to 1.00 | Eurodollar Rate Loans
 
Debt Instrument [Line Items]  
Change in rate based on leverage ratio, contractual interest rate 3.00%
Greater than or equal to 4.50 to 1.00 but less than 6.00 to 1.00 | Applicable Fee Rate
 
Debt Instrument [Line Items]  
Change in rate based on leverage ratio, contractual interest rate 0.60%
Greater than or equal to 6.00 to 1.00 | Base Rate
 
Debt Instrument [Line Items]  
Change in rate based on leverage ratio, contractual interest rate 2.25%
Greater than or equal to 6.00 to 1.00 | Eurodollar Rate Loans
 
Debt Instrument [Line Items]  
Change in rate based on leverage ratio, contractual interest rate 3.50%
Greater than or equal to 6.00 to 1.00 | Applicable Fee Rate
 
Debt Instrument [Line Items]  
Change in rate based on leverage ratio, contractual interest rate 0.75%