Condensed Consolidated Statements of Comprehensive Income (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
NET INCOME	$ 2,682		$ 935		$ 2,226		$ 1,609
Other comprehensive income (loss), net of tax:
Reclassification adjustment for realized gains on marketable securities included in net income (1)		[1]	(292)	[1]	(4)	[1]	(434)	[1]
Reclassification adjustment for unrealized losses on marketable securities included in net income, net of income taxes (2)	2	[2]	27	[2]	17	[2]	27	[2]
Changes in fair value of marketable securities (3)	(28)	[3]	(381)	[3]	1,012	[3]	413	[3]
COMPREHENSIVE INCOME	$ 2,656		$ 289		$ 3,251		$ 1,615

[1] Net of deferred income taxes of $0, $(178), $(2) and $(265), respectively.

[2] Net of deferred income taxes of $(1), $17, $(10), and $17, respectively.

[3] Net of deferred income taxes of $(16), $(201), $639 and $285, respectively.