Restructuring Costs (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($) employee	Jun. 30, 2015 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 292	$ 0	$ 292	$ 0
Number of employees impacted by reduction-in-force (employee) | employee			25
Percent of employee base impacted			50.00%
Employee Severance and Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring costs			$ 258
Asset Impairments
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 34		$ 34