Income Taxes - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Income Tax Examination [Line Items]
Income tax (benefit)/expense	$ (5)	$ (137)	$ 76	$ (90)
Effective income tax rate reconciliation, percent	0.07%	3.36%	(0.38%)	0.41%
Operating loss carryforwards					$ 45,100
Not Subject to Limitations | Subsequent To Change Date In 2010
Income Tax Examination [Line Items]
Operating loss carryforwards					26,500
Subject to Limitations | Minimum
Income Tax Examination [Line Items]
Operating loss carryforwards					1,000
Subject to Limitations | Maximum
Income Tax Examination [Line Items]
Operating loss carryforwards					$ 2,300