CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
CONSOLIDATED BALANCE SHEETS
Accounts receivable, allowance for doubtful accounts (in dollars)	$ 519	$ 460
Common stock, shares authorized	43,000,000	43,000,000
Common stock, shares issued	18,582,954	18,516,115
Common stock, shares outstanding	18,582,954	18,516,115