CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
CONSOLIDATED BALANCE SHEETS
Accounts receivable, allowance (in dollars)	$ 2	$ 2
Par value (in dollars per share)	$ 0	$ 0
Common stock, shares issued	32,434	30,351
Common stock, shares outstanding	32,434	30,351