Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
Net Income		$ 2,098	$ 2,071	$ 12,731	$ 9,916
Other comprehensive gain (loss), net of tax:
Change in fair value of marketable equity securities before reclassification	[1]	4,329	(3,741)	3,054	(13,520)
Amounts Reclassified from Accumulated Other Comprehensive Income Net of Tax	[2]	(4)	(709)	(79)	(790)
Total other comprehensive income (loss), net of tax		4,325	(4,450)	2,975	(14,310)
Comprehensive (loss) income		$ 6,423	$ (2,379)	$ 15,706	$ (4,394)

[1] Net of tax (provision) benefit of $(2,385) and $2,066 for the three months ended June 30, 2016 and 2015, respectively, and $(1,683) and $7,416 for the six months ended June 30, 2016 and 2015, respectively.

[2] Includes a $6 and $1,099 gain on available-for-sale securities that was reclassified to “Gain on disposition of equity securities” in the consolidated statements of income for the three months ended June 30, 2016 and 2015, respectively, and $123 and $1,225 for the six months ended June 30, 2016 and 2015, respectively. The tax impact of these reclassification were $2 and $390 for the three months ended June 30, 2016 and 2015, respectively, and $44 and $435 for the six months ended June 30, 2016 and 2015, respectively.