BALANCE SHEETS BALANCE SHEETS Parenthetical - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
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	52,161,588	52,259,224
Treasury stock, shares	436,417	338,781
Debt issuance costs	$ 9,449	$ 9,645