Acquisitions - Summary of Estimated Fair Values of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Dec. 30, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Goodwill	$ 146,179	$ 146,421		$ 2,929
Clarient, Inc. [Member]
Business Acquisition [Line Items]
Current assets, including cash and cash equivalents			$ 31,978
Property, plant and equipment			19,241
Identifiable intangible assets – customer relationships			84,000
Goodwill			143,251
Total assets acquired			278,470
Current liabilities			(12,389)
Deferred tax liability			(17,904)
Long-term liabilities			(103)
Net assets acquired			248,074
Clarient, Inc. [Member] | Initially Reported [Member]
Business Acquisition [Line Items]
Current assets, including cash and cash equivalents			31,978
Property, plant and equipment			19,241
Identifiable intangible assets – customer relationships			84,000
Goodwill			143,493
Total assets acquired			278,712
Current liabilities			(12,631)
Deferred tax liability			(17,904)
Long-term liabilities			(103)
Net assets acquired			248,074
Clarient, Inc. [Member] | Measurement Period Adjustments [Member]
Business Acquisition [Line Items]
Goodwill			(242)
Total assets acquired			(242)
Current liabilities			$ 242