Convertible Notes, Net	3 Months Ended
Mar. 31, 2015
Text Block [Abstract]
Convertible Notes, Net	6. CONVERTIBLE NOTES, NET In November 2013, we issued $172.5 million of 5.25% convertible senior notes due on December 1, 2018, or Convertible Notes. The Convertible Notes’ issuance costs are amortized through interest expense over the life of the Convertible Notes using the effective interest method. Including this amortization, our all-in cost of the Convertible Notes is 5.87% per annum. As of March 31, 2015, the Convertible Notes were carried on our consolidated balance sheet at $162.5 million, net of an unamortized discount of $6.9 million. The Convertible Notes are convertible at the holders’ option into shares of our class A common stock, only under specific circumstances, prior to the close of business on August 31, 2018, at the applicable conversion rate in effect on the conversion date. Thereafter, the Convertible Notes are convertible at the option of the holder at any time until the second scheduled trading day immediately preceding the maturity date. The Convertible Notes were not convertible as of March 31, 2015. The conversion rate was initially set to equal 34.8943 shares of class A common stock per $1,000 principal amount of Convertible Notes, which is equivalent to an initial conversion price of $28.66 per share of class A common stock, subject to adjustment upon the occurrence of certain events. We may not redeem the Convertible Notes prior to maturity. As of March 31, 2015, the conversion option value was zero based on the price of our class A common stock of $28.37. In addition, we had the intent and ability to settle the Convertible Notes in cash. As a result, the Convertible Notes did not have any impact on our diluted earnings per share. We recorded a $9.1 million discount upon issuance of the Convertible Notes based on the implied value of the conversion option and an assumed effective interest rate of 6.50%. Including the amortization of this discount and the issuance costs, our total cost of the Convertible Notes is 7.16% per annum. During the three months ended March 31, 2015, we incurred total interest on our convertible notes of $2.9 million, of which $2.3 million related to cash coupon and $630,000 related to the amortization of discount and certain issuance costs. During the three months ended March 31, 2014, we incurred total interest on our convertible notes of $2.9 million, of which $2.3 million related to cash coupon and $592,000 related to the amortization of discount and certain issuance costs. Refer to Note 2 for additional discussion of our accounting policies for the Convertible Notes.

6. CONVERTIBLE NOTES, NET

In November 2013, we issued $172.5 million of 5.25% convertible senior notes due on December 1, 2018, or Convertible Notes. The Convertible Notes’ issuance costs are amortized through interest expense over the life of the Convertible Notes using the effective interest method. Including this amortization, our all-in cost of the Convertible Notes is 5.87% per annum. As of March 31, 2015, the Convertible Notes were carried on our consolidated balance sheet at $162.5 million, net of an unamortized discount of $6.9 million.

The Convertible Notes are convertible at the holders’ option into shares of our class A common stock, only under specific circumstances, prior to the close of business on August 31, 2018, at the applicable conversion rate in effect on the conversion date. Thereafter, the Convertible Notes are convertible at the option of the holder at any time until the second scheduled trading day immediately preceding the maturity date. The Convertible Notes were not convertible as of March 31, 2015. The conversion rate was initially set to equal 34.8943 shares of class A common stock per $1,000 principal amount of Convertible Notes, which is equivalent to an initial conversion price of $28.66 per share of class A common stock, subject to adjustment upon the occurrence of certain events. We may not redeem the Convertible Notes prior to maturity. As of March 31, 2015, the conversion option value was zero based on the price of our class A common stock of $28.37. In addition, we had the intent and ability to settle the Convertible Notes in cash. As a result, the Convertible Notes did not have any impact on our diluted earnings per share.

We recorded a $9.1 million discount upon issuance of the Convertible Notes based on the implied value of the conversion option and an assumed effective interest rate of 6.50%. Including the amortization of this discount and the issuance costs, our total cost of the Convertible Notes is 7.16% per annum. During the three months ended March 31, 2015, we incurred total interest on our convertible notes of $2.9 million, of which $2.3 million related to cash coupon and $630,000 related to the amortization of discount and certain issuance costs. During the three months ended March 31, 2014, we incurred total interest on our convertible notes of $2.9 million, of which $2.3 million related to cash coupon and $592,000 related to the amortization of discount and certain issuance costs. Refer to Note 2 for additional discussion of our accounting policies for the Convertible Notes.