Debt Instrument, Floor Interest Rate

No definition available.

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

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

+ References

+ Details

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

- Definition

Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(f))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

+ Details

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

- Details

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Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
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Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ssd_CreditFacilityDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Balance Type:
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- Details

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- Details

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Data Type:	na
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- Details

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Debt (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Debt (Details) - USD ($) $ in Millions	Sep. 30, 2020	Sep. 30, 2020	May 21, 2020	Mar. 31, 2020
Debt
Remaining borrowing capacity	$ 227.5	$ 227.5
Line of Credit
Debt
Credit facility, total available credit	303.9	303.9
Revolving Credit Facility \| Credit Facility
Debt
Maximum borrowing capacity			$ 300.0
Credit facility, total available credit				$ 150.0
Remaining borrowing capacity	75.0	$ 75.0
Repayment of credit facility	$ 75.0
Revolving Credit Facility \| Credit Facility \| London Interbank Offered Rate (LIBOR)
Debt
LIBOR floor interest rate		25.00%
Revolving Credit Facility \| Credit Facility \| Minimum
Debt
Commitment fee percentage		20.00%
Revolving Credit Facility \| Credit Facility \| Minimum \| London Interbank Offered Rate (LIBOR)
Debt
Debt instrument, basis spread on variable rate		80.00%
Revolving Credit Facility \| Credit Facility \| Minimum \| Base Rate
Debt
Debt instrument, basis spread on variable rate		20.00%
Revolving Credit Facility \| Credit Facility \| Maximum
Debt
Commitment fee percentage		35.00%
Revolving Credit Facility \| Credit Facility \| Maximum \| London Interbank Offered Rate (LIBOR)
Debt
Debt instrument, basis spread on variable rate		165.00%
Revolving Credit Facility \| Credit Facility \| Maximum \| Base Rate
Debt
Debt instrument, basis spread on variable rate		65.00%