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Subsequent Events (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions |  |  | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Mar. 17, 2020 | Mar. 16, 2020 | Feb. 29, 2020 | Mar. 27, 2020 | Aug. 31, 2019 | Mar. 31, 2019 | Mar. 22, 2019
Subsequent Events [Line Items] |  |  |  |  |  |  |
Dividend payable, declared date |  |  | Mar. 17, 2020 |  |  |  |
Dividends payable, date to be paid |  |  | Apr. 30, 2020 |  |  |  |
Dividend payable, record date |  |  | Apr. 17, 2020 |  |  |  |
Line of credit |  |  | $ 68.5 |  |  |  |
Reserved accrued |  |  |  |  | $ 8.7 |  |
Amended And Restated Credit Agreement [Member] |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |
Capital investments permitted, Carryforward limit |  |  | 2.5 |  |  |  |
Seventh Amended Credit Facility [Member] |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |
Revolving credit facility, amount |  |  | 100.0 |  |  | $ 100.0 | $ 125.0
Other prohibition exception |  |  | 2.5 |  |  |  |
Subsequent Events [Member] |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |
Cash dividend declared | $ 0.67 |  |  |  |  |  |
Revolving credit facility, amount |  |  |  | $ 150.0 |  |  |
Additional maximum borrowing capacity |  |  |  | 80.0 |  |  |
Line of credit |  |  |  | $ 149.0 |  |  |
Subsequent Events [Member] | Amended And Restated Credit Agreement [Member] |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |
Revolving credit facility, amount |  | $ 150.0 |  |  |  |  |
Other prohibition exception |  | 5.0 |  |  |  |  |
Subsequent Events [Member] | Amended And Restated Credit Agreement, Year 2020 [Member] |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |
Capital investments permitted |  | 30.5 |  |  |  |  |
Subsequent Events [Member] | Amended And Restated Credit Agreement, Year 2021 [Member] |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |
Capital investments permitted |  | 19.0 |  |  |  |  |
Subsequent Events [Member] | Amended And Restated Credit Agreement, Year 2022, 2023, 2024, and 2025 [Member] |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |
Capital investments permitted |  | 15.0 |  |  |  |  |
Subsequent Events [Member] | Seventh Amended Credit Facility [Member] |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |
Capital investments permitted, Carryforward limit |  | 5.0 |  |  |  |  |
Maximum [Member] | Subsequent Events [Member] | Amended And Restated Credit Agreement [Member] |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |
Intercompany loans |  | 5.0 |  |  |  |  |
United Kingdom Subsidiary [Member] | Seventh Amended Credit Facility [Member] |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |
Revolving credit facility, amount |  |  | $ 50.0 |  |  | $ 50.0 |
Europe, The Middle East, Africa And India Subsidiary [Member] | Subsequent Events [Member] | Amended And Restated Credit Agreement [Member] |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |
Revolving credit facility, amount |  | $ 100.0 |  |  |  |  |

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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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- Definition Date the declared dividend will be paid, in CCYY-MM-DD format. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586 + Details
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- Definition Date the dividend to be paid was declared, in CCYY-MM-DD format. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586 + Details
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- Definition Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format. + References No definition available. + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + 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(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: 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=6876686&loc=d3e534808-122878 Reference 3: 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(16)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 + Details
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- 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://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=6877327&loc=d3e13212-122682 + Details
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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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