Subsequent Events (Details) - Subsequent Event [Member] $ in Thousands	1 Months Ended
	Jan. 31, 2017 USD ($) employee
Minimum
Subsequent Event [Line Items]
Expected restructuring charge	$ 2,600
Maximum
Subsequent Event [Line Items]
Expected restructuring charge	2,800
Contingent Portion | Minimum
Subsequent Event [Line Items]
Expected restructuring charge	4,300
Contingent Portion | Maximum
Subsequent Event [Line Items]
Expected restructuring charge	$ 4,700
Workforce
Subsequent Event [Line Items]
Number of employees affected | employee	109
Workforce | Minimum
Subsequent Event [Line Items]
Expected restructuring charge	$ 2,000
Workforce | Maximum
Subsequent Event [Line Items]
Number of employees affected | employee	139
Expected restructuring charge	$ 2,100
Workforce | Bellevue, Washington and Long Beach, California [Member]
Subsequent Event [Line Items]
Number of employees affected | employee	97
Workforce | San Francisco, California [Member]
Subsequent Event [Line Items]
Number of employees affected | employee	12
Workforce | Contingent Portion
Subsequent Event [Line Items]
Number of employees affected | employee	30
Workforce | Contingent Portion | Minimum
Subsequent Event [Line Items]
Expected restructuring charge	$ 2,450
Workforce | Contingent Portion | Maximum
Subsequent Event [Line Items]
Expected restructuring charge	2,650
Lease, Contract Termination, and Other | Minimum
Subsequent Event [Line Items]
Expected restructuring charge	600
Lease, Contract Termination, and Other | Maximum
Subsequent Event [Line Items]
Expected restructuring charge	700
Lease, Contract Termination, and Other | Contingent Portion | Minimum
Subsequent Event [Line Items]
Expected restructuring charge	1,850
Lease, Contract Termination, and Other | Contingent Portion | Maximum
Subsequent Event [Line Items]
Expected restructuring charge	$ 2,050