For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Concentrations of Credit and Other Risks (Details) - Customer Concentration Risk	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Sales Revenue \| Quick Laser Technology Co., Ltd.
Concentration Risk [Line Items]
Concentration risk, percentage	11.00%	13.00%	14.00%
Sales Revenue \| Raytheon Company
Concentration Risk [Line Items]
Concentration risk, percentage	13.00%
Accounts receivable \| Two Customers
Concentration Risk [Line Items]
Concentration risk, percentage	48.00%
Accounts receivable \| One Customer
Concentration Risk [Line Items]
Concentration risk, percentage		17.00%