CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Statement Of Income And Comprehensive Income Abstract
NET INCOME (LOSS)	$ 6,473	$ 6,875	$ 15,973	$ 16,517	$ 26,024