Equity	3 Months Ended
Mar. 31, 2015
Share Repurchases [Abstract]
Stockholders' Equity	Equity In September 2001, our Board of Directors authorized a program to repurchase 15.4 million shares, adjusted for stock splits, of our common stock in open market or negotiated transactions using available cash, cash equivalents and investments which was subsequently amended in February 2012. Approximately 3.2 million shares remain authorized for repurchase under the program as of March 31, 2015. There were no shares repurchased in the open market during the three months ended March 31, 2015 and 2014. The authorization remains open at March 31, 2015 and has no expiration date. The share repurchase authorization is discretionary and may be suspended or discontinued at any time without prior notice. During the three months ended March 31, 2015 and 2014, our Board of Directors declared regular quarterly dividends totaling $1.8 million and $1.8 million, respectively. Future payment of cash dividends and the amount of such dividends will depend upon our financial conditions, our results of operations, our cash requirements, our tax treatment, and certain corporate law requirements, as well as factors deemed relevant by our Board of Directors.

Equity

3 Months Ended

Mar. 31, 2015

Equity

In September 2001, our Board of Directors authorized a program to repurchase 15.4 million shares, adjusted for stock splits, of our common stock in open market or negotiated transactions using available cash, cash equivalents and investments which was subsequently amended in February 2012. Approximately 3.2 million shares remain authorized for repurchase under the program as of March 31, 2015. There were no shares repurchased in the open market during the three months ended March 31, 2015 and 2014. The authorization remains open at March 31, 2015 and has no expiration date. The share repurchase authorization is discretionary and may be suspended or discontinued at any time without prior notice.

During the three months ended March 31, 2015 and 2014, our Board of Directors declared regular quarterly dividends totaling $1.8 million and $1.8 million, respectively. Future payment of cash dividends and the amount of such dividends will depend upon our financial conditions, our results of operations, our cash requirements, our tax treatment, and certain corporate law requirements, as well as factors deemed relevant by our Board of Directors.