Long-Term Debt and Other Financing Arrangements - Thermo Loan Agreement (Details)	6 Months Ended
	Jun. 30, 2019 USD ($) $ / shares	Jun. 28, 2019
Loan Agreement with Thermo
Debt Instrument [Line Items]
Loan interest rate, percentage		15.00%
Outstanding interest	$ 100,000
Loan Agreement with Thermo | Thermo
Debt Instrument [Line Items]
Loan agreement, conversion price (USD per share) | $ / shares	$ 0.69
Loan interest rate, percentage	12.00%
Maturity period after full payment of Facility Agreement	6 months
Outstanding interest	$ 83,600,000
Thermo
Debt Instrument [Line Items]
Equity method investment, threshold percentage requiring a Strategic Review Committee	0.45
Equity method investment, transaction threshold for approval requirement	$ 250,000