Organization and Summary of Significant Accounting Policies (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net loss per share - basic and diluted (in dollars per share)	$ (0.29)	$ (0.01)
Operating activities	$ 28,182	$ 22,007
Financing activities	(30,136)	228,826
ASU 2016-09
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Change in accounting guidance, impact on net income	$ 800
Change in accounting guidance, impact on basic earnings per share (in dollars per share)	$ 0.02
Change in accounting guidance, impact on diluted earnings per share (in dollars per share)	0.02
Net loss per share - basic and diluted (in dollars per share)	$ (0.29)
Operating activities		200
Financing activities		$ (200)
Retained Earnings | ASU 2016-09
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cumulative effect of new accounting principle			$ 1,600