Overview of the Business and Basis of Presentation - Valuation methodology and unobservable inputs (Details) $ in Thousands	Jun. 30, 2019 USD ($)
Liabilities Fair Value Disclosure	$ 3,090
Contingent Consideration
Liabilities Fair Value Disclosure	2,890
Contingent warrants
Liabilities Fair Value Disclosure	200
Preferred Stock [Member]
Assets, Fair Value Disclosure	2,883
Fair Value, Inputs, Level 1 [Member]
Liabilities Fair Value Disclosure	0
Fair Value, Inputs, Level 1 [Member] | Contingent Consideration
Liabilities Fair Value Disclosure	0
Fair Value, Inputs, Level 1 [Member] | Contingent warrants
Liabilities Fair Value Disclosure	0
Fair Value, Inputs, Level 1 [Member] | Preferred Stock [Member]
Assets, Fair Value Disclosure	0
Fair Value, Inputs, Level 2 [Member]
Liabilities Fair Value Disclosure	0
Fair Value, Inputs, Level 2 [Member] | Contingent Consideration
Liabilities Fair Value Disclosure	0
Fair Value, Inputs, Level 2 [Member] | Contingent warrants
Liabilities Fair Value Disclosure	0
Fair Value, Inputs, Level 2 [Member] | Preferred Stock [Member]
Assets, Fair Value Disclosure	0
Fair Value, Inputs, Level 3 [Member]
Liabilities Fair Value Disclosure	3,090
Fair Value, Inputs, Level 3 [Member] | Contingent Consideration
Liabilities Fair Value Disclosure	2,890
Fair Value, Inputs, Level 3 [Member] | Contingent warrants
Liabilities Fair Value Disclosure	200
Fair Value, Inputs, Level 3 [Member] | Preferred Stock [Member]
Assets, Fair Value Disclosure	$ 2,883
Monte Carlo simulations [Member] | Measurement Input, Discount Rate [Member]
Business Combination, Contingent Consideration, Liability, Measurement Input	12.00
Monte Carlo simulations [Member] | Measurement Input, Option Volatility [Member]
Business Combination, Contingent Consideration, Liability, Measurement Input	25.00
Monte Carlo simulations [Member] | Measurement Input, Credit Spread [Member]
Business Combination, Contingent Consideration, Liability, Measurement Input	8.00
Monte Carlo simulations [Member] | Measurement Input Drift Rate [Member]
Business Combination, Contingent Consideration, Liability, Measurement Input	1.70
BlackScholes Monte Carlo Simulations [Member] | Measurement Input, Option Volatility [Member]
Warrants and Rights Outstanding, Measurement Input	30.0
BlackScholes Monte Carlo Simulations [Member] | Measurement Input, Expected Term [Member]
Warrants and Rights Outstanding, Measurement Input	6.25
BlackScholes Monte Carlo Simulations [Member] | Measurement Input, Risk Free Interest Rate [Member]
Warrants and Rights Outstanding, Measurement Input	2.60
BlackScholes Monte Carlo Simulations [Member] | Measurement Input Dividend Yield [Member]
Warrants and Rights Outstanding, Measurement Input	0.0