CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY AND NONCONTROLLING INTEREST - USD ($)	Common Shares	Additional paid-in capital	Accumulated deficit	Accumulated Other Comprehensive (Loss) Income	Non-Controlling Interests	Total
Balance at Sep. 30, 2021	$ 3,945,000	$ 112,198,000	$ (11,015,000)	$ 0	$ 0	$ 105,128,000
Balance (in shares) at Sep. 30, 2021	15,931,485
Consolidated net income (loss)	$ 0	0	(83,411,000)	0	364,000	(83,047,000)
Stock issued in acquisitions	$ 2,094,000	459,289,000	0	0	0	461,383,000
Stock issued in acquisitions (In shares)	8,374,138
Noncontrolling interest related to Envigo acquisition	$ 0	0	0	0	(983,000)	(983,000)
Issuance of stock under employee stock plans	$ 11,000	38,000	0	0	0	49,000
Issuance of stock under employee stock plans (in shares)	42,971
Stock based compensation	$ 0	19,160,000	0	0	0	19,160,000
Stock based compensation (in shares)	0
Pension cost amortization	$ 0	0	0	(110,000)	0	(110,000)
Foreign currency translation	0	0	0	247,000	0	247,000
Reclassification of convertible note embedded derivative to equity (Note 7)	0	88,576,000	0	0	0	88,576,000
Balance at Dec. 31, 2021	$ 6,050,000	679,261,000	(94,426,000)	137,000	(619,000)	590,403,000
Balance (in shares) at Dec. 31, 2021	24,348,594
Balance at Sep. 30, 2021	$ 3,945,000	112,198,000	(11,015,000)	0	0	105,128,000
Balance (in shares) at Sep. 30, 2021	15,931,485
Consolidated net income (loss)						$ (89,134,000)
Stock issued in acquisitions (In shares)						9,480,595
Balance at Mar. 31, 2022	$ 6,336,000	713,034,000	(101,090,000)	(628,000)	(242,000)	$ 617,410,000
Balance (in shares) at Mar. 31, 2022	25,495,701
Balance at Dec. 31, 2021	$ 6,050,000	679,261,000	(94,426,000)	137,000	(619,000)	590,403,000
Balance (in shares) at Dec. 31, 2021	24,348,594
Consolidated net income (loss)	$ 0	0	(6,664,000)	0	577,000	(6,087,000)
Stock issued in acquisitions	$ 276,000	32,599,000	0	0	0	$ 32,875,000
Stock issued in acquisitions (In shares)	1,106,457					1,106,457
Noncontrolling interest related to Envigo acquisition	$ 0	0	0	0	(191,000)	$ (191,000)
Issuance of stock under employee stock plans	$ 10,000	36,000	0	0	0	46,000
Issuance of stock under employee stock plans (in shares)	40,650
Stock based compensation	$ 0	1,138,000	0	0	0	1,138,000
Pension cost amortization	0	0	0	340,000	0	340,000
Foreign currency translation	0	0	0	(1,105,000)	(9,000)	(1,114,000)
Balance at Mar. 31, 2022	$ 6,336,000	713,034,000	(101,090,000)	(628,000)	(242,000)	617,410,000
Balance (in shares) at Mar. 31, 2022	25,495,701
Balance at Sep. 30, 2022	$ 6,362,000	707,787,000	(348,277,000)	(5,500,000)	(606,000)	359,766,000
Balance (in shares) at Sep. 30, 2022	25,598,289
Consolidated net income (loss)	$ 0	0	(86,932,000)		(391,000)	(87,323,000)
Issuance of stock under employee stock plans	$ 1,000	23,000	0			24,000
Issuance of stock under employee stock plans (in shares)	8,347
Stock based compensation	$ 0	2,046,000	0			2,046,000
Pension cost amortization	0	0	0	(54,000)		(54,000)
Foreign currency translation	0	0	0	5,348,000		5,348,000
Balance at Dec. 31, 2022	$ 6,363,000	709,856,000	(435,209,000)	(206,000)	(997,000)	279,807,000
Balance (in shares) at Dec. 31, 2022	25,606,636
Balance at Sep. 30, 2022	$ 6,362,000	707,787,000	(348,277,000)	(5,500,000)	(606,000)	359,766,000
Balance (in shares) at Sep. 30, 2022	25,598,289
Consolidated net income (loss)						$ (97,317,000)
Stock issued in acquisitions (In shares)						0
Balance at Mar. 31, 2023	$ 6,491,000	711,591,000	(444,838,000)	702,000	(1,311,000)	$ 272,635,000
Balance (in shares) at Mar. 31, 2023	25,759,107
Balance at Dec. 31, 2022	$ 6,363,000	709,856,000	(435,209,000)	(206,000)	(997,000)	279,807,000
Balance (in shares) at Dec. 31, 2022	25,606,636
Consolidated net income (loss)	$ 0	0	(9,629,000)		(365,000)	$ (9,994,000)
Stock issued in acquisitions (In shares)						0
Issuance of stock under employee stock plans	$ 128,000	(46,000)	0			$ 82,000
Issuance of stock under employee stock plans (in shares)	152,471
Stock based compensation	$ 0	1,781,000	0			1,781,000
Pension cost amortization	0	0	0	(54,000)		(54,000)
Foreign currency translation	0	0	0	962,000		962,000
Other	0	0	0		51,000	51,000
Balance at Mar. 31, 2023	$ 6,491,000	$ 711,591,000	$ (444,838,000)	$ 702,000	$ (1,311,000)	$ 272,635,000
Balance (in shares) at Mar. 31, 2023	25,759,107