CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
CONDENSED CONSOLIDATED BALANCE SHEETS
Accounts receivable, allowance for doubtful accounts (in dollars)	$ 71	$ 262
Common stock par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized	43,000,000	43,000,000
Common stock, shares issued	18,711,604	18,664,068
Common stock, shares outstanding	18,711,604	18,664,068