Reportable Segment and Major Customers Information - Additional Information (Detail) - Customer Concentration Risk [Member] - Customer	3 Months Ended		12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Sep. 30, 2018
Two Diagnostic Manufacturing Customers [Member] | Segment, Third-Party Sales Revenue [Member] | Life Science [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of major customers	2	2
Concentration risk percentage	28.00%	15.00%
Two Diagnostic Distributor Customers [Member] | Segment, Third-Party Sales Revenue [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of major customers	2	2
Two Diagnostic Distributor Customers [Member] | Segment, Third-Party Sales Revenue [Member] | Diagnostics [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk percentage	34.00%	32.00%
Two Diagnostic Distributor Customers [Member] | Consolidated Accounts Receivable [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of major customers	2		2
Concentration risk percentage	14.00%		12.00%
Two Diagnostic Distributor Customers [Member] | Revenues [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk percentage	24.00%	23.00%