Long-Term Debt and Other Financing Arrangements - Summary of Future Aggregate Maturities of Notes Payable (Details) $ in Thousands	Mar. 31, 2022 USD ($)
Debt Disclosure [Abstract]
2022 (excluding the three months ended March 31, 2022)	$ 5,620
2023	6,000
2024	2,000
Total	$ 13,620

Long-Term Debt, Future Aggregate Maturity, Remainder Of Fiscal Year

No definition available.

Name:	owlt_LongTermDebtFutureAggregateMaturityRemainderOfFiscalYear
Namespace Prefix:	owlt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant