Organization and Summary of Significant Accounting Policies (ASU 2016-09) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Recently Issued Accounting Pronouncements
Accumulated deficit	$ (242,894)	$ (242,088)
ASU 2016-09
Recently Issued Accounting Pronouncements
Cumulative-effect adjustment	11,600
Deferred tax assets	11,600
Deferred tax assets valuation allowance	11,600
Accumulated deficit	$ (11,600)