Derivatives Derivatives (Schedule of Subsequent Non-designated Hedges Outstanding) (Details) - Subsequent Event [Member]	1 Months Ended
Nov. 03, 2015 MMBTU $ / Unit bbl
Collar [Member] \| Jan'16 - Dec'16 [Member] \| Natural Gas [Member] \| NYMEX (HH) [Member]
Derivative [Line Items]
Hedged Volume (MMBtu/day) \| MMBTU	27,000
Floor Price	2.50
Ceiling Price	3.11
Collar [Member] \| Jan'16 - Jun'16 [Member] \| Crude Oil [Member] \| WTI - NYMEX [Member]
Derivative [Line Items]
Hedged Volume (Bbl/day) \| bbl	700
Floor Price	44.00
Ceiling Price	54.00
Three-Way Collar [Member] \| Jan'16 - Dec'16 [Member] \| Crude Oil [Member] \| WTI - NYMEX [Member]
Derivative [Line Items]
Hedged Volume (Bbl/day) \| bbl	700
Subfloor Price	35.00
Floor Price	46.50
Ceiling Price	57.00
Three-Way Collar [Member] \| Jul'16 - Dec'16 [Member] \| Crude Oil [Member] \| WTI - NYMEX [Member]
Derivative [Line Items]
Hedged Volume (Bbl/day) \| bbl	700
Subfloor Price	35.00
Floor Price	47.50
Ceiling Price	63.50

Not Designated as Hedging Instrument Hedged Volume of Natural Gas

No definition available.

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Namespace Prefix:	unt_
Data Type:	num:energyItemType
Balance Type:	na
Period Type:	duration

- Definition

Not Designated as Hedging Instrument Hedged Volume of Oil

+ References

No definition available.

+ Details

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Namespace Prefix:	unt_
Data Type:	num:volumeItemType
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Period Type:	duration

- Definition

The cap rate on a price risk derivative such as a cap or collar. A payment or receipt is triggered if the market rate exceeds the cap rate on the contract.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeCapPrice
Namespace Prefix:	us-gaap_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	instant

- Definition

Floor rate on a price risk derivative such as a floor or a collar. A payment or receipt is triggered if the market rate falls below the floor rate on the contract.

+ References

No definition available.

+ Details

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Data Type:	us-types:perUnitItemType
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- Definition

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.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The strike price on the price risk option contract such as a put option or a call option.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	instant

- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Namespace Prefix:
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- Details

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- Details

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