Line Of Credit Facility, Additional Borrowing Capacity

No definition available.

Name:	hnh_LineOfCreditFacilityAdditionalBorrowingCapacity
Namespace Prefix:	hnh_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

+ Details

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Fair value of the amount outstanding under the credit facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13433-108611

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13476-108611

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash inflow from parent as a source of financing that is recorded as additional paid in capital.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3255-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

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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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- Details

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- Details

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Credit Facilities (Senior Credit Facilities) (Details) - USD ($)		12 Months Ended
	Aug. 05, 2014	Dec. 31, 2016	Mar. 23, 2016	Jan. 22, 2015	Aug. 29, 2014
Senior notes \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Variable rate basis description	LIBOR
Senior notes \| Base rate
Debt Instrument [Line Items]
Variable rate basis description	Base Rate
Loans Payable \| Revolving facilities
Debt Instrument [Line Items]
Aggregate maximum principal amount		$ 110,000,000
Distribution	$ 80,000,000
Term loan \| Revolving facilities
Debt Instrument [Line Items]
Face amount of debt	$ 40,000,000
Revolving facilities \| Line of credit
Debt Instrument [Line Items]
Aggregate maximum principal amount			$ 400,000,000.0		$ 365,000,000
Increase in borrowing capacity			$ 35,000,000.0
Weighted average interest rate (as a percent)		3.24%
Availability under facility		$ 70,100,000
Revolving facilities \| Line of credit \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate (as a percentage)		2.50%
Revolving facilities \| Line of credit \| Base rate
Debt Instrument [Line Items]
Basis spread on variable rate (as a percentage)		1.50%
Revolving facilities \| Line of credit \| Sublimit for Issuance of Letters of Credit
Debt Instrument [Line Items]
Aggregate maximum principal amount					20,000,000
Revolving facilities \| Line of credit \| Sublimit for the Issuance of Swing Loans
Debt Instrument [Line Items]
Aggregate maximum principal amount					$ 20,000,000
Revolving facilities \| Line of credit \| Limit for purchase of shares
Debt Instrument [Line Items]
Aggregate maximum principal amount				$ 71,000,000.0
Line of credit \| Letter of credit
Debt Instrument [Line Items]
Letters of credit		$ 6,700,000
Line of credit \| Letter of credit \| Insurance activities
Debt Instrument [Line Items]
Letters of credit		3,200,000
Line of credit \| Letter of credit \| Environmental and other matters
Debt Instrument [Line Items]
Letters of credit		$ 3,500,000