Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
NET INCOME	$ 4,945		$ 2,682		$ 6,302		$ 2,226
Other comprehensive income (loss), net of tax:
Reclassification adjustment for realized gains on marketable securities included in net income (1)		[1]		[1]		[1]	(4)	[1]
Reclassification adjustment for unrealized losses on marketable securities included in net income, net of income taxes (2)	1	[2]	2	[2]	1	[2]	17	[2]
Changes in fair value of marketable securities (3)	710	[3]	(28)	[3]	1,132	[3]	1,012	[3]
COMPREHENSIVE INCOME	$ 5,656		$ 2,656		$ 7,435		$ 3,251

[1] Net of deferred income taxes of $0, $0, $0 and $(2), respectively.

[2] Net of deferred income taxes of $0, $(1), $0, and $(10), respectively.

[3] Net of deferred income taxes of $434, $(16), $693 and $639, respectively.