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
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13531-108611

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13537-108611

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-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

Significant Customers (Details)	3 Months Ended		6 Months Ended		12 Months Ended
Significant Customers (Details)	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Significant Customers (Textual)
Concentration risk, percentage	10.00%	10.00%	10.00%	10.00%
Sales Revenue, Net [Member] \| Customer One [Member]
Significant Customers (Textual)
Concentration risk, percentage	19.00%	21.00%	20.00%	15.00%
Sales Revenue, Net [Member] \| Customer Two [Member]
Significant Customers (Textual)
Concentration risk, percentage	17.00%	15.00%	18.00%	15.00%
Sales Revenue, Net [Member] \| Customer three [Member]
Significant Customers (Textual)
Concentration risk, percentage	12.00%	13.00%	15.00%	10.00%
Accounts Receivable [Member] \| Customer [Member]
Significant Customers (Textual)
Concentration risk, percentage			74.00%		79.00%