Debt - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended			1 Months Ended	9 Months Ended				1 Months Ended	9 Months Ended				3 Months Ended	9 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013 Maximum [Member]	Nov. 30, 2011 Revolving credit facility [Member]	Mar. 31, 2013 Revolving credit facility [Member]	Jun. 30, 2012 Revolving credit facility [Member]	Mar. 31, 2013 Revolving credit facility [Member] Maximum [Member]	Mar. 31, 2013 Revolving credit facility [Member] Minimum [Member]	Nov. 30, 2011 Term loan [Member]	Mar. 31, 2013 Term loan [Member]	Jun. 30, 2012 Term loan [Member]	Mar. 31, 2013 Term loan [Member] Maximum [Member]	Mar. 31, 2013 Term loan [Member] Minimum [Member]	Mar. 31, 2013 First Amendment [Member]	Mar. 31, 2013 Interest rate swap [Member]
Debt Instrument [Line Items]
Accretion of promissory notes	$ 50,000.0		$ 100,000
Acquisition of businesses				3,400,000
Net of imputed interest amounts				100,000
Accretion of promissory notes recorded in interest expense		100,000		300,000
Revolving credit facility, total						100,000,000	200,000,000
Percentage of amortization with principal of credit facility year one											5.00%
Percentage of amortization with principal of credit facility year two											10.00%
Percentage of amortization with principal of credit facility year three											15.00%
Percentage of amortization with principal of credit facility year four											20.00%
Percentage of amortization with principal of credit facility year five											50.00%
Period for credit facility						5 years
Third Loan Amendment date			Feb. 15, 2013
Goodwill impairments and non-recurring cash expenses included in adjusted EBITDA					5,000,000
Revolving line of credit facility, current							100,000,000
Interest rate dependent upon the ratio of funded debt to adjusted EBITDA and ranges from Eurodollar Margin									2.375%	1.625%				2.75%	2.00%
Prime rate for the revolving credit line							1.00%
Prime rate for the term loan												1.00%
Adjusted EBITDA			5,000,000
Revolving credit line requires an annual facility fee							0.375%
Derivative notional amount outstanding in the swap agreement																	85,000,000
Amortization of principle amount of term loan	35,000,000		35,000,000
Interest rate swap effectively fixes the Eurodollar Margin																	0.97%
Minimum fixed charge coverage ratio			1.15
Maximum funded debt to adjusted EBITDA ratio			3
Upfront arrangement fees incurred in connection with the credit facility	700,000															200,000
Outstanding amount							0	0				92,500,000	97,500,000
Effective date of swap																	Apr. 09, 2012
Derivative maturity date																	Nov. 04, 2016
Notional amount outstanding in the swap agreement																	85,000,000
Fair value of the interest rate swap																	1,200,000
Hedge effective portion of the interest rate																	1,200,000
Credit agreement with a financial institution that is used as collateral for fidelity bonds placed with an insurance company	400,000		400,000
Credit agreement with a financial institution that is used as collateral for the Company's corporate headquarters' operating lease	$ 500,000		$ 500,000
Letters of credit automatically renew annually without amendment on the annual expiration date			30 days