Condensed Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Statement of Other Comprehensive Income [Abstract]
Net income (loss)	$ 1,181	$ (1,497)	$ 345	$ (1,342)
Other comprehensive loss, net:
Change in unrealized loss on investments, net	(191)	0	(191)	0
Comprehensive income (loss)	$ 990	$ (1,497)	$ 154	$ (1,342)