Note Payable - Narrative (Details) - Notes Payable - IPA Agreements	Sep. 30, 2019 USD ($)	Dec. 31, 2018 USD ($)	Nov. 30, 2015 USD ($) supplier installment_purchase_agreement
Line of Credit Facility [Line Items]
Number of IPA agreements | installment_purchase_agreement			3
Face amount			$ 1,700,000
Number of suppliers | supplier			1
Amount outstanding	$ 37,000	$ 300,000
Minimum
Line of Credit Facility [Line Items]
Interest rate			2.90%
Maximum
Line of Credit Facility [Line Items]
Interest rate			5.00%