Equity Method Investment in Equity Investee - Equity Method Investment, Summarized Financial Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023
Schedule of Equity Method Investments [Line Items]
Current assets	$ 396,162		$ 398,001
Current liabilities	154,507		154,233
Gross profit	161,004		171,918		$ 199,536
Operating expenses	189,440		175,674		177,007
Net loss	$ 96,976		$ 11,081		$ (12,364)
Facility in Liangjiang New Area of Chongqing (the 'Joint Venture')
Schedule of Equity Method Investments [Line Items]
Current assets		$ 101,151		$ 86,280		$ 122,324
Non-current assets		315,420		338,450		333,165
Current liabilities		61,341		70,776		122,340
Non-current liabilities		82,124		81,899		36,525
Revenue		142,921		128,951		178,974
Gross profit		8,662		1,844		4,502
Operating expenses		10,637		9,174		5,939
Net loss		$ 3,195		$ 9,477		$ 4,906