Condensed Consolidated Statements of Other Comprehensive Income (Loss) (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
Statement of Comprehensive Income [Abstract]
Consolidated net income	$ 3,034	$ 7,866	$ 7,738	$ 8,461
Other comprehensive income (loss):
Change in unrealized value of investments	0	56	0	49
Foreign currency translation adjustment	30	(266)	(32)	(397)
Other comprehensive income (loss)	30	(210)	(32)	(348)
Comprehensive income	$ 3,064	$ 7,656	$ 7,706	$ 8,113