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Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

No definition available.

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Value of equity interests (such as common shares, preferred shares, or partnership interest) issued or issuable to acquire the entity.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Number of shares of equity interests issued or issuable to acquire entity.

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Data Type:	xbrli:sharesItemType
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

No definition available.

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Data Type:	dtr-types:perShareItemType
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Period Type:	instant

In a business combination achieved in stages, this element represents a narrative description of the history, developments, or effect of the acquisition relative to the percentage of equity in the acquiree held by the acquirer immediately before the acquisition date. Such description may describe any gain recognized as a result of the acquisition.

No definition available.

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The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Period Type:	duration

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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Name:	us-gaap_TypeOfArrangementAxis=opad_ForwardPurchaseAgreementMember
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Data Type:	na
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Data Type:	na
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