Nature of Business and Summary of Significant Accounting Policies - Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Jun. 30, 2014
Intangible Assets by Major Class [Line Items]
Intangible assets, cost	$ 16,040	$ 16,040
Finite-lived intangible assets, accumulated amortization	(6,654)	(6,488)
Finite-lived intangible assets, net	9,386	9,552
Customer relationships [Member]
Intangible Assets by Major Class [Line Items]
Intangible assets, cost	9,800	9,800
Finite-lived intangible assets, accumulated amortization	(6,357)	(6,203)
Finite-lived intangible assets, net	3,443	3,597
Non-compete agreement [Member]
Intangible Assets by Major Class [Line Items]
Intangible assets, cost	340	340
Finite-lived intangible assets, accumulated amortization	(297)	(285)
Finite-lived intangible assets, net	43	55
Trade Name [Member]
Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, accumulated amortization	0	0
Indefinite-lived intangible assets, excluding goodwill	$ 5,900	$ 5,900