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v3.20.1

Warrants (Details) | 12 Months Ended
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Dec. 31, 2019 $ / shares shares
Warrants [Abstract] |
Range of Exercise Prices | $ 7.50
Number Outstanding | shares | 40,000
Weighted Average Remaining Contractual Life | 1 year 3 months 8 days
Weighted Average Exercise Price | $ 7.50

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- Definition Range of exercise prices warrants. + References No definition available. + Details
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Namespace Prefix: | olbg_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

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- References No definition available. + Details
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Namespace Prefix: | olbg_
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Balance Type: | na
Period Type: | duration

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- Definition Weighted Average Exercise Price. + References No definition available. + Details
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Namespace Prefix: | olbg_
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Balance Type: | na
Period Type: | duration

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- Definition Weighted average remaining contractual life warrants. + References No definition available. + Details
Name: | olbg_WeightedAverageRemainingContractualLifeWarrants
Namespace Prefix: | olbg_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Number of warrants or rights outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant