Lot purchase agreement deposits (Details) - USD ($)	3 Months Ended	12 Months Ended
Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Lot purchase agreement deposits
Cash deposit percentage	10.00%		10.00%
Deposit and pre-acquisition costs	$ 8,113,303	$ 3,804,436	$ 3,804,436	$ 2,946,001
Remaining purchase price	205,808,168	65,451,928	65,451,928	77,007,079
Total contract value	213,921,471	69,256,364	69,256,364	79,953,080
Forfeited lot purchase agreement deposits	$ 8,664	$ 89,361	$ 0	$ 211,482	$ 84,619

The amount of expense recognized in cost of sales for the write-off of forfeited purchase option deposits during the period.

No definition available.

Name:	uhg_CostOfSalesWriteOffOfForfeitedPurchaseOptionDeposits
Namespace Prefix:	uhg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The nonrefundable cash deposit for purchase options, as a percentage of the purchase price.

No definition available.

Name:	uhg_PurchaseOptionDepositPercentage
Namespace Prefix:	uhg_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

The total contract value, including amounts recognized and not yet recognized, for purchase options outstanding at balance sheet date.

No definition available.

Name:	uhg_PurchaseOptionTotalContractValue
Namespace Prefix:	uhg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Discloses the total purchase price of land option agreements that were not recorded.

No definition available.

Name:	us-gaap_LandUnderPurchaseOptionsNotRecorded
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Carrying amount of an option or options to acquire real property.

No definition available.

Name:	us-gaap_PurchaseOptionsLand
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

No definition available.