Goodwill and Intangible Assets - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	Feb. 28, 2015	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2016
Finite Lived Intangible Assets [Line Items]
Change in goodwill		$ 0
Amortization of intangible assets		290,000	$ 769,000
Increase (decrease) in cost of intangible assets		300,000
RF Solutions [Member] | Customer Contracts and Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Impairment of intangible assets				$ 1,100,000	$ 4,700,000	$ 5,800,000
Cost of Revenues [Member]
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets		$ 200,000	$ 200,000
Minimum [Member]
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets basis over estimated useful lives		1 year
Minimum [Member] | Customer Contracts and Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets basis over estimated useful lives		4 years
Maximum [Member]
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets basis over estimated useful lives		8 years
Maximum [Member] | Customer Contracts and Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets basis over estimated useful lives		6 years
Nexgen Wireless, Inc. [Member]
Finite Lived Intangible Assets [Line Items]
Goodwill acquired	$ 3,300,000