Reportable Segments and Major Customers Information - Additional Information (Detail) - Customer Concentration Risk [Member] - Customer	3 Months Ended		9 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Sep. 30, 2017
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			15.00%		11.00%
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	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	28.00%	28.00%	29.00%	28.00%
Two Diagnostic Distributor Customers [Member] | Revenues [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk percentage	19.00%	20.00%	21.00%	20.00%
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	2	2
Concentration risk percentage	17.00%	10.00%	18.00%	17.00%