CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
CONSOLIDATED BALANCE SHEETS
Accounts receivable, allowance for doubtful accounts (in dollars)	$ 647	$ 918
Common stock, shares authorized	50,000	50,000
Common stock, shares issued	15,569	15,533
Common stock, shares outstanding	15,569	15,533