Goodwill and Intangible Assets, Net - Net Intangible Assets (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Impairment	$ 0	$ 0	$ 0
Net Carrying Amount	$ 2,917,000	5,417,000
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Useful Life (In Years)	10 years
Gross Carrying Amount	$ 25,002,000	25,002,000
Accumulated Amortization	(22,085,000)	(19,585,000)
Net Carrying Amount	$ 2,917,000	$ 5,417,000