Assets Held for Sale - Additional Information (Detail) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Long Lived Assets Held-for-sale [Line Items]
Assets held for sale	$ 11,000	$ 24,000

The aggregate value (measured at the lower of net carrying value or fair value less cost of disposal) for assets of a disposal group, including a component of the entity (discontinued operation), to be sold or that has subsequently been disposed of through sale, as of the financial statement date.

No definition available.

Name:	lcav_AssetsHeldForSale
Namespace Prefix:	lcav_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant