Cash Dividends

9 Months Ended

Sep. 30, 2013

Stockholders' Equity Note [Abstract]

Cash Dividends

12. Cash Dividends

On January 23, 2013, our board of directors declared that the regular quarterly dividends to be paid to our stockholders in 2013 will be $0.15 per share of common stock, payable on March 12, June 12, September 12 and December 12 of 2013 to stockholders of record on March 5, June 5, September 5 and December 5 of 2013, the record dates for each of the dividend payments, respectively.

In connection with the September 12, 2013, dividend payment, the conversion rates for our convertible notes adjusted as follows:

Convertible Notes	Conversion Rate per $1,000 Principal Amount	Approximate Conversion Price Per Common Share		Effective Date
Series 2012 Notes	179.777	$	5.56	September 3, 2013
May 2015 Notes	157.3700	$	6.35	September 3, 2013