CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Net capitalized interest	$ 325	$ 389	$ 1,038
Common Stock
Company's common stock surrendered in exchange for the exercise of stock options (in shares)	185	127	45