Summary of Significant Accounting Policies - Additional Information (Detail)	Jun. 30, 2016 USD ($)
Accounting Policies [Abstract]
Cash, FDIC insured amount	$ 250,000
Cash balance in excess of amount covered by Federal Deposit Insurance Corporation	$ 4,100,000

The amount of cash deposited in financial institutions as of the balance sheet date that is insured by the Federal Deposit Insurance Corporation.

No definition available.

Name:	us-gaap_CashFDICInsuredAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant