Goodwill and Other Intangible Assets - Purchase Price Allocated (Detail) (USD $)	0 Months Ended		9 Months Ended
	Apr. 30, 2009	Apr. 01, 2009	Sep. 30, 2014	Apr. 01, 2009
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted-Average Amortization Period			12 years 2 months 12 days
Net tangible assets		$ 36,000		$ 36,000
Total		5,135,000		5,135,000
Customer relationships and developed technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted-Average Amortization Period			8 years
Allocated purchase Price		1,310,000		1,310,000
Customer relationships and developed technology [Member] | Minimum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted-Average Amortization Period		6 years
Customer relationships and developed technology [Member] | Maximum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted-Average Amortization Period		9 years
In-process research and development [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Allocated purchase Price		1,340,000		1,340,000
Trade name [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted-Average Amortization Period	15 years	15 years	15 years
Allocated purchase Price				310,000
Goodwill [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill		$ 2,139,000		$ 2,139,000