Fair Value Measurements, Marketable Securities and Variable Interest Entities - Schedule of Company's Financial Instruments (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Jun. 30, 2015
Liabilities:
Liabilities, Fair Value Measurements	$ 15,049	$ 15,049
Revolving loan facility [Member]
Liabilities:
Liabilities, Fair Value Measurements	15,000	15,000
Promissory Note [Member]
Liabilities:
Liabilities, Fair Value Measurements	49	49
Money market funds [Member]
Assets:
Assets, Fair Value Measurements	20,167	20,156
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Money market funds [Member]
Assets:
Assets, Fair Value Measurements	20,167	20,156
Significant Other Observable Inputs (Level 2) [Member]
Liabilities:
Liabilities, Fair Value Measurements	15,049	15,049
Significant Other Observable Inputs (Level 2) [Member] | Revolving loan facility [Member]
Liabilities:
Liabilities, Fair Value Measurements	15,000	15,000
Significant Other Observable Inputs (Level 2) [Member] | Promissory Note [Member]
Liabilities:
Liabilities, Fair Value Measurements	$ 49	$ 49