Income Taxes - Summary of Deferred Tax Assets and Liabilities (Detail) - USD ($)	Mar. 31, 2024	Mar. 31, 2023
Deferred tax assets:
Accrued liabilities not currently deductible	$ 7,181,000	$ 6,885,000
Allowance for doubtful accounts	1,076,000	736,000
Stock-based compensation	2,489,000	2,423,000
Deferred lease liability	7,917,000	8,740,000
Capitalized research and development expenditures	4,124,000	2,495,000
Other	497,000	536,000
Deferred tax assets	23,284,000	21,815,000
Deferred tax liabilities:
Excess of book over tax basis of fixed assets	(5,758,000)	(6,654,000)
Intangible assets	(4,922,000)	(5,057,000)
Right-of-use asset	(6,075,000)	(7,190,000)
Accrued revenue	(2,284,000)	(1,851,000)
Other	(464,000)	(508,000)
Total deferred tax liabilities	(19,503,000)	(21,260,000)
Valuation allowance	(236,000)	(331,000)
Deferred tax liabilities	(19,739,000)	(21,591,000)
Net deferred tax assets (liabilities)	$ 3,545,000	$ 224,000