Commitment and Contingencies - Additional Information (Detail)	12 Months Ended
	Jun. 30, 2017 Lease
Myriad RBM [Member]
Commitments and Contingencies [Line Items]
Non-cancelable operating leases	1
Operating leases expiration period	2020
Administrative Functions [Member] | Minimum [Member]
Commitments and Contingencies [Line Items]
Operating leases expiration period	2018
Administrative Functions [Member] | Maximum [Member]
Commitments and Contingencies [Line Items]
Operating leases expiration period	2022
Information Technology Equipment [Member]
Commitments and Contingencies [Line Items]
Non-cancelable operating leases	4
Operating leases expiration period	2018
Information Technology Equipment [Member] | Maximum [Member]
Commitments and Contingencies [Line Items]
Operating leases expiration period	2019
Salt Lake City, Utah [Member]
Commitments and Contingencies [Line Items]
Non-cancelable operating leases	5
Salt Lake City, Utah [Member] | Minimum [Member]
Commitments and Contingencies [Line Items]
Operating leases expiration period	2022
Salt Lake City, Utah [Member] | Maximum [Member]
Commitments and Contingencies [Line Items]
Operating leases expiration period	2027
Germany [Member]
Commitments and Contingencies [Line Items]
Non-cancelable operating leases	1
Operating leases expiration period	2017
Cancelable operating leases	1
Cancelable operating leases expiration period	2018
South San Francisco, California [Member]
Commitments and Contingencies [Line Items]
Non-cancelable operating leases	1
Operating leases expiration period	2021
Mason, Ohio and Toronto, Canada [Member]
Commitments and Contingencies [Line Items]
Non-cancelable operating leases	2
Mason, Ohio and Toronto, Canada [Member] | Minimum [Member]
Commitments and Contingencies [Line Items]
Operating leases expiration period	2018
Mason, Ohio and Toronto, Canada [Member] | Maximum [Member]
Commitments and Contingencies [Line Items]
Operating leases expiration period	2024