Restructuring Costs (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 335,000	$ 0
Percent of employees terminated	50.00%
Employee Severance and Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 301,000	0
Asset Impairments
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 34,000	$ 0