Goodwill and Other Intangible Assets - Summary of Changes in Carrying Amount of Goodwill (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Sep. 30, 2014		Jun. 30, 2013	Jun. 30, 2014
Goodwill [Roll Forward]
Goodwill, beginning of period	$ 28,189	[1]
Additions to goodwill during the period	3,797		13,422
Goodwill, end of period	31,986		14,767
Acquired Goodwill	45,139			41,342
Accumulated impairment	(13,153)			(13,153)
Manufacturing and Design Services [Member]
Goodwill [Roll Forward]
Goodwill, beginning of period	26,008
Additions to goodwill during the period	3,797		11,241
Goodwill, end of period	29,805		14,767
Acquired Goodwill	42,958			39,161
Accumulated impairment	(13,153)			(13,153)
Engineered Components and Products [Member]
Goodwill [Roll Forward]
Goodwill, beginning of period	2,181
Additions to goodwill during the period	0		2,181
Goodwill, end of period	2,181		0
Acquired Goodwill	2,181			2,181
Accumulated impairment	$ 0			$ 0

[1] Derived from the Company’s audited financial statements as of June 30, 2014.