Stockholders' Equity	12 Months Ended
Dec. 31, 2018
Equity [Abstract]
Stockholders' Equity	11. Stockholders’ Equity We have a board approved discretionary stock repurchase program under which shares may be repurchased from time to time at prevailing market prices, through open market or unsolicited negotiated transactions, depending on market conditions. Our Board of Directors originally adopted the plan in October 2008 with an initial authorized maximum of $10 million. The plan was amended in September 2012 and increased to $20 million, again amended in April 2015 and increased to a total of $30 million, and again amended in August 2017 and increased to a total of $40 million. Under the program, the shares may be repurchased from time to time at prevailing market prices, through open market or unsolicited negotiated transactions, depending on market conditions. We expect that the repurchase of our common stock under the program will be financed with existing working capital and amounts available under our existing credit facility. The repurchased shares are held as treasury stock. No limit was placed on the duration of the repurchase program. There is no guarantee as to the exact number of shares that we will repurchase. Subject to applicable securities laws, repurchases may be made at such times and in such amounts as our management deems appropriate. The program can also be discontinued at any time management feels additional purchases are not warranted. We did not repurchase any shares of our common stock under this program during the year ended December 31, 2018. From the inception of the program in October 2008 through December 31, 2018, we have repurchased an aggregate of 4,973,974 shares of our common stock for a total cost of $37.5 million. At December 31, 2018, we had $2.5 million available in stock repurchases under the program, subject to any limitations that may apply from time to time under our existing credit facility. We have never paid cash dividends on our capital stock and our credit facility prohibits us from paying any cash dividends on our capital stock. Therefore, we do not currently anticipate paying dividends; we intend to retain any earnings to finance the growth and development of our business.

Stockholders' Equity

12 Months Ended

Dec. 31, 2018

11. Stockholders’ Equity

We have a board approved discretionary stock repurchase program under which shares may be repurchased from time to time at prevailing market prices, through open market or unsolicited negotiated transactions, depending on market conditions. Our Board of Directors originally adopted the plan in October 2008 with an initial authorized maximum of $10 million. The plan was amended in September 2012 and increased to $20 million, again amended in April 2015 and increased to a total of $30 million, and again amended in August 2017 and increased to a total of $40 million. Under the program, the shares may be repurchased from time to time at prevailing market prices, through open market or unsolicited negotiated transactions, depending on market conditions. We expect that the repurchase of our common stock under the program will be financed with existing working capital and amounts available under our existing credit facility. The repurchased shares are held as treasury stock. No limit was placed on the duration of the repurchase program. There is no guarantee as to the exact number of shares that we will repurchase. Subject to applicable securities laws, repurchases may be made at such times and in such amounts as our management deems appropriate. The program can also be discontinued at any time management feels additional purchases are not warranted.

We did not repurchase any shares of our common stock under this program during the year ended December 31, 2018. From the inception of the program in October 2008 through December 31, 2018, we have repurchased an aggregate of 4,973,974 shares of our common stock for a total cost of $37.5 million. At December 31, 2018, we had $2.5 million available in stock repurchases under the program, subject to any limitations that may apply from time to time under our existing credit facility.

We have never paid cash dividends on our capital stock and our credit facility prohibits us from paying any cash dividends on our capital stock. Therefore, we do not currently anticipate paying dividends; we intend to retain any earnings to finance the growth and development of our business.