Net Income (Loss) per Common Share - Additional Information (Detail)	Dec. 31, 2015 shares
Earnings Per Share [Abstract]
Common shares loaned under the share lending arrangement, issued and outstanding	1,800,000

The number of shares outstanding as of the date of the statement of financial position in connection with an own-share lending arrangement entered into by the entity, in contemplation of a convertible debt offering or other financing.

No definition available.

Name:	us-gaap_OwnshareLendingArrangementSharesOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant