16. Stock repurchase program	12 Months Ended
Dec. 31, 2011
Treasury Stock Acquired, Repurchase Authorization	16. Stock repurchase program On May 27, 2010, our Board of Directors approved a stock repurchase program (the “Stock Repurchase Program”). Under the Stock Repurchase Program, we are authorized to repurchase up to $10,000,000 of our outstanding shares of common stock from time to time in the open market over a three-year period ending May 27, 2013, depending on market conditions, share price and other factors. In March 2012, the Board of Directors approved an increase in our stock repurchase authorization under the Stock Repurchase Program to $15,000,000 from $10,000,000. For the year ended December 31, 2011, we repurchased a total of 275,255 shares of common stock for approximately $2,680,000, at an average price of $9.74 per share, under the Stock Repurchase Program. From January 1, 2005 through December 31, 2011, we repurchased a total of 1,461,693 shares of common stock for approximately $11,395,000 under all of our stock repurchase programs, at an average price of $7.80 per share. We use the cost method to account for treasury stock purchases, under which the price paid for the stock is charged to the treasury stock account. Repurchases of our common stock are accounted for as of the trade date. At December 31, 2011, approximately $7,143,000 remains authorized for future repurchases under the Stock Repurchase Program.

16. Stock repurchase program

12 Months Ended

Dec. 31, 2011

Treasury Stock Acquired, Repurchase Authorization

16. Stock repurchase program

On May 27, 2010, our Board of Directors approved a stock repurchase program (the “Stock Repurchase Program”). Under the Stock Repurchase Program, we are authorized to repurchase up to $10,000,000 of our outstanding shares of common stock from time to time in the open market over a three-year period ending May 27, 2013, depending on market conditions, share price and other factors. In March 2012, the Board of Directors approved an increase in our stock repurchase authorization under the Stock Repurchase Program to $15,000,000 from $10,000,000. For the year ended December 31, 2011, we repurchased a total of 275,255 shares of common stock for approximately $2,680,000, at an average price of $9.74 per share, under the Stock Repurchase Program. From January 1, 2005 through December 31, 2011, we repurchased a total of 1,461,693 shares of common stock for approximately $11,395,000 under all of our stock repurchase programs, at an

average price of $7.80 per share. We use the cost method to account for treasury stock purchases, under which the price paid for the stock is charged to the treasury stock account. Repurchases of our common stock are accounted for as of the trade date. At December 31, 2011, approximately $7,143,000 remains authorized for future repurchases under the Stock Repurchase Program.