Note 7 - Commitments and Contingent Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	1 Months Ended	12 Months Ended
Nov. 30, 2012	Sep. 30, 2010	Dec. 31, 2012	Dec. 31, 2011
Period of Lease		15 years
Option to Cancel Lease		10 years
Term of Lease	7 years
Optional Lease Extension Period	5 years
Operating Leases, Rent Expense (in Dollars)			$ 280	$ 275

Rental expense incurred for leased assets including furniture and equipment which has not been recognized in costs and expenses applicable to sales and revenues; for example, cost of goods sold or other operating costs and expenses.

No definition available.

Name:	us-gaap_LeaseAndRentalExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration