Stockholders' Equity (Deficit)	12 Months Ended
Dec. 31, 2017
Stockholders' Equity (Deficit) [Abstract]
Stockholders' Equity (Deficit)	Stockholders' Equity During the year ended December 31, 2015, the Company filed an Amended and Restated Articles of Incorporation which, among other things, increased the number of authorized shares to 1,500,000,000 shares of common stock, par value $0.01 per share, and authorized 150,000,000 shares of blank check preferred stock, par value of $0.01 per share, which may be issued in one or more series of Preferred Stock with such powers, preferences and relative, participating, optional and other special rights, and the qualifications, limitations or restrictions as the Board of Directors of the Company shall approve. As of December 31, 2017, the total amount of the Company's authorized common and preferred stock consisted of 1,500,000,000 and 150,000,000 shares, respectively. As of December 31, 2017, shares of common stock that were issued and outstanding were 197,615,064 and 195,522,290, respectively. There were no shares of preferred stock issued or outstanding as of December 31, 2017. Treasury Stock On July 31, 2017, the Board of Directors approved the terms of a share repurchase program, under which the Company was authorized to repurchase up to $50 million of its common shares. This authority was primarily used to offset dilution caused by the issuance and exercise of stock options and other equity compensation programs. The Company repurchased shares through open market purchases in accordance with applicable federal securities laws, including through Rule 10b5-1 trading plans and under Rule 10b-18 of the Securities Exchange Act of 1934. Purchases were made at times and prices considered appropriate by management. Repurchased common stock is available for use in connection with the Company's stock plans and for other corporate purposes. Based on the Company’s strong cash flow and balance sheet, this program did not impact our ability to execute our business plans, allocate capital for our capital investment projects or pursue other strategic initiatives. The Company financed the share repurchase program through its operating cash flow and cash on hand. During August 2017, the Company repurchased approximately 2.1 million shares of its common stock through open market purchases at an average price of $23.89, and a total cost of $50.0 million, including broker's commissions. As of December 31, 2017, the share repurchase program was fully executed. The repurchase of these shares by the Company was accounted for under the cost method. The share repurchases were recorded as "Treasury stock, at cost" on the Consolidated Balance Sheets.

Stockholders' Equity

During the year ended December 31, 2015, the Company filed an Amended and Restated Articles of Incorporation which, among other things, increased the number of authorized shares to 1,500,000,000 shares of common stock, par value $0.01 per share, and authorized 150,000,000 shares of blank check preferred stock, par value of $0.01 per share, which may be issued in one or more series of Preferred Stock with such powers, preferences and relative, participating, optional and other special rights, and the qualifications, limitations or restrictions as the Board of Directors of the Company shall approve.

As of December 31, 2017, the total amount of the Company's authorized common and preferred stock consisted of 1,500,000,000 and 150,000,000 shares, respectively. As of December 31, 2017, shares of common stock that were issued and outstanding were 197,615,064 and 195,522,290, respectively. There were no shares of preferred stock issued or outstanding as of December 31, 2017.

Treasury Stock

On July 31, 2017, the Board of Directors approved the terms of a share repurchase program, under which the Company was authorized to repurchase up to $50 million of its common shares. This authority was primarily used to offset dilution caused by the issuance and exercise of stock options and other equity compensation programs. The Company repurchased shares through open market purchases in accordance with applicable federal securities laws, including through Rule 10b5-1 trading plans and under Rule 10b-18 of the Securities Exchange Act of 1934. Purchases were made at times and prices considered appropriate by management. Repurchased common stock is available for use in connection with the Company's stock plans and for other corporate purposes. Based on the Company’s strong cash flow and balance sheet, this program did not impact our ability to execute our business plans, allocate capital for our capital investment projects or pursue other strategic initiatives. The Company financed the share repurchase program through its operating cash flow and cash on hand.

During August 2017, the Company repurchased approximately 2.1 million shares of its common stock through open market purchases at an average price of $23.89, and a total cost of $50.0 million, including broker's commissions. As of December 31, 2017, the share repurchase program was fully executed.

The repurchase of these shares by the Company was accounted for under the cost method. The share repurchases were recorded as "Treasury stock, at cost" on the Consolidated Balance Sheets.