- Financial Ratios Under Senior Credit Facility (Detail)	3 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014
Required
Debt Instrument [Line Items]
Leverage Ratio (maximum)	3.5	3.50	3.5	3.5
Interest Coverage Ratio (minimum)	2.75	2.75	2.75	3.75
Actual
Debt Instrument [Line Items]
Leverage Ratio (maximum)	1.63	1.57	1.55	1.22
Interest Coverage Ratio (minimum)	10.39	10.62	10.99	11.4