Goodwill and Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2015	Mar. 31, 2015
Schedule Of Goodwill And Other Intangible Asset [Line Items]
Amortization expenses of intangible assets, 2016	$ 482
Amortization expenses of intangible assets, 2017	473
Amortization expenses of intangible assets, 2018	448
Amortization expenses of intangible assets, 2019	447
Amortization expenses of intangible assets, 2020	223
Amortization expenses of intangible assets, After 2020	444
Increase (decrease) in goodwill	$ 500	$ (500)
Deferred Tax Assets [Member]
Schedule Of Goodwill And Other Intangible Asset [Line Items]
Increase (decrease) in goodwill		$ 600