restricted payments under the Credit Agreement

No definition available.

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Namespace Prefix:	dhx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- 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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- 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
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- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
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Period Type:	duration

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-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=120391452&loc=d3e13212-122682

+ Details

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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

+ Details

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

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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

- Definition

Indebtedness divided by net capital.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:pureItemType
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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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INDEBTEDNESS (Details) $ in Thousands	6 Months Ended	12 Months Ended
INDEBTEDNESS (Details) $ in Thousands	Jun. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)	Nov. 30, 2018 USD ($)
Debt Instrument [Line Items]
restricted payments under the Credit Agreement	$ 5,000
Maximum available to be borrowed under revolving facility			$ 140,000
Total borrowed	$ 15,656	$ 19,583
Line of Credit Facility, Current Borrowing Capacity			$ 90,000
Line of Credit Facility, Commitment Fee Percentage	0.30%	0.35%
London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Interest margin	1.75%	2.00%
Minimum [Member]
Debt Instrument [Line Items]
Ratio of Indebtedness to Net Capital, Pro forma basis	1.00
Line of Credit Facility, Commitment Fee Percentage	0.30%
Minimum [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Interest margin	1.75%
Minimum [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Interest margin	0.75%
Maximum [Member]
Debt Instrument [Line Items]
Ratio of Indebtedness to Net Capital, Pro forma basis	2.00
Line of Credit Facility, Commitment Fee Percentage	0.45%
Maximum [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Interest margin	2.50%
Maximum [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Interest margin	1.50%
Borrowings [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Ratio of Indebtedness to Net Capital, Pro forma basis	1.00
Borrowings [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Ratio of Indebtedness to Net Capital, Pro forma basis	2.50