Note 6 - Accounts Payable and Accrued Expenses (Detail) - Accounts Payable and Accrued Expenses (Incomplete) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Accounts payable	$ 1,924	$ 2,266
Accrued salaries, and other employee benefits	529	1,013
Accrued warranty (Note 12)	50	50
Accrued medical costs	197	257
Other	400	261
	$ 3,100	$ 3,847