CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$ 8,210	$ 2,829
Other comprehensive income
Holding gain (loss) on available for sale investments	11	(11)
Comprehensive income	$ 8,221	$ 2,818