Fair Value Measures (Changes in Fair Value of Contingent Earn-Out Liabilities) (Detail) (USD $)	3 Months Ended	9 Months Ended
	Jun. 30, 2014	Jun. 30, 2014	Dec. 31, 2013
Fair Value Disclosures [Abstract]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	$ 19,800,000	$ 19,800,000
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements	(760,000)	(1,421,000)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases	(901,000)	7,406,000
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings	512,000	512,000
Balance at beginning of period		450,000	8,096,000
Balance at end of period	$ 6,947,000	$ 6,947,000	$ 8,096,000