Summary of Significant Accounting Policies - Receivable, Inventory, And Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue Recognition from Customers [Abstract]
Contract with Customer, Liability	$ 43,480	$ 40,476
Accounts Receivable
Minimum number of days after an invoice is issued when accounts receivable is considered due	30 days
Maximum number of days after an invoice is issued when accounts receivable is considered due	60 days
Allowance for doubtful accounts receivable	$ 249	249
Stock-Based Compensation
Tax benefit (expense) for stock-based compensation	$ 0	$ 0	$ 0
Minimum
Sale/leaseback transactions
Lease term	6 years
Intangible Assets
Intangible asset useful lives	5 years
Maximum
Sale/leaseback transactions
Lease term	7 years
Intangible Assets
Intangible asset useful lives	10 years
Leasehold Improvements | Minimum
Property, Plant and Equipment
Estimated useful life	5 years
Leasehold Improvements | Maximum
Property, Plant and Equipment
Estimated useful life	10 years
Software, machinery and equipment | Minimum
Property, Plant and Equipment
Estimated useful life	1 year
Software, machinery and equipment | Maximum
Property, Plant and Equipment
Estimated useful life	15 years