BALANCE SHEETS BALANCE SHEETS Parenthetical - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Common stock, par value per share	$ 0.01	$ 0.01
Common stock, shares authorized	250,000,000	250,000,000
Common stock, shares issued	52,598,005	52,598,005
Common stock, shares outstanding	52,516,828	52,312,516
Treasury stock, shares	81,177	285,489
Debt issuance costs	$ 7,614	$ 8,033