Quarterly report pursuant to Section 13 or 15(d)

Credit Facilities - Summary of Required Covenant Included in Loan Agreements (Detail)

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Credit Facilities - Summary of Required Covenant Included in Loan Agreements (Detail) (USD $)
Sep. 30, 2013
Line of Credit Facility [Line Items]  
Minimum Liquidity (defined as available borrowings under the Loan Agreements plus unrestricted cash divided by actual borrowings) of greater than 32.00%
Maximum Debt to Equity Ratio of less than 1
Covenants Threshold [Member]
 
Line of Credit Facility [Line Items]  
Minimum Liquidity (defined as available borrowings under the Loan Agreements plus unrestricted cash divided by actual borrowings) of greater than 5.00%
12 month rolling Net Interest Margin (starting June, 2014) of greater than $ 0
Maximum Debt to Equity Ratio of less than 4