Reportable Segments and Major Concentration Data-Asset Concentration Segment Based on Geography (Detail) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Disclosure Of Asset Concentration Based On Geographical Location [Line Items]
Assets	$ 463,097	$ 449,722	$ 405,261
Israel [Member]
Disclosure Of Asset Concentration Based On Geographical Location [Line Items]
Assets	71,536	80,416
United Kingdom [Member]
Disclosure Of Asset Concentration Based On Geographical Location [Line Items]
Assets	27,927	30,027
Germany [Member]
Disclosure Of Asset Concentration Based On Geographical Location [Line Items]
Assets	16,734	22,293
Canada [Member]
Disclosure Of Asset Concentration Based On Geographical Location [Line Items]
Assets	15,875	15,236
Italy [Member]
Disclosure Of Asset Concentration Based On Geographical Location [Line Items]
Assets	$ 7,225	$ 6,921