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Segment and Geographic Information - Schedule of (Loss) Income from Operations by Reporting Segments (Details) - USD ($) | 3 Months Ended
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Mar. 31, 2020 | Mar. 31, 2019
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items] |  |
Revenue | $ 13,359,637 | $ 10,057,899
Cost of revenues | (9,963,950) | (7,646,277)
Gross profit | $ 3,395,687 | $ 2,411,622
Gross margin % | 25.40% | 24.00%
Total operating expenses | $ 4,906,841 | $ 4,443,830
Loss from operations | (1,511,154) | (2,032,208)
OSS Segment |  |
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items] |  |
Revenue | 7,818,278 | 5,230,086
Cost of revenues | (5,621,751) | (3,729,173)
Gross profit | $ 2,196,527 | $ 1,500,913
Gross margin % | 28.10% | 28.70%
Total operating expenses | $ 3,530,278 | $ 3,137,869
Loss from operations | (1,333,751) | (1,636,956)
CDI Segment |  |
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items] |  |
Revenue | 621,946 | 299,454
Cost of revenues | (499,158) | (345,727)
Gross profit | $ 122,788 | $ (46,273)
Gross margin % | 19.70% | (15.50%)
Total operating expenses | $ 455,931 | $ 312,977
Loss from operations | (333,143) | (359,250)
Bressner Segment |  |
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items] |  |
Revenue | 4,919,413 | 4,528,359
Cost of revenues | (3,843,041) | (3,571,377)
Gross profit | $ 1,076,372 | $ 956,982
Gross margin % | 21.90% | 21.10%
Total operating expenses | $ 920,632 | $ 992,984
Loss from operations | $ 155,740 | $ (36,002)

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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
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