Segment Reporting and Geographic Information - Textual (Details)	12 Months Ended
	Dec. 31, 2019 Segment Customer	Dec. 31, 2018 Customer
Concentration Risk [Line Items]
Number of reportable segments | Segment	1
Customer Concentration Risk [Member] | Revenue [Member]
Concentration Risk [Line Items]
Segment reporting, disclosure of major customer	No individual end user customer accounted for more than 10% of the Company’s revenue in 2017.  The Company does not have purchase contracts with any of its customers that obligate them to continue to purchase its products.
Customer Concentration Risk [Member] | Revenue [Member] | Taiwan Semiconductor [Member]
Concentration Risk [Line Items]
Customer concentration risk percentage	13.40%
Customer Concentration Risk [Member] | Revenue [Member] | SK Hynix Inc. [Member]
Concentration Risk [Line Items]
Customer concentration risk percentage	13.10%	12.20%
Customer Concentration Risk [Member] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Customer concentration risk percentage	10.00%	10.00%
Number of major customer | Customer	1	0