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Debt (Details Textual) | Mar. 31, 2016 USD ($)
--- | ---
Line of credit |
Line of Credit Facility [Line Items] |
Total borrowing capacity under lines of credit | $ 873,700,000
Total available for borrowings under lines of credit | 538,600,000
Line of credit | Secured Debt |
Line of Credit Facility [Line Items] |
Total borrowing capacity under lines of credit | 23,700,000
Senior Notes |
Line of Credit Facility [Line Items] |
Face amount of debt | 75,000,000
Notes Payable, due 2021 | Senior Notes |
Line of Credit Facility [Line Items] |
Face amount of debt | $ 26,000,000.0
Interest rate | 4.10%
Notes Payable, due 2023 | Senior Notes |
Line of Credit Facility [Line Items] |
Face amount of debt | $ 24,000,000.0
Interest rate | 4.60%
Notes Payable, due 2026 | Senior Notes |
Line of Credit Facility [Line Items] |
Face amount of debt | $ 25,000,000.0
Interest rate | 4.90%

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + 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 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + 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://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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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + 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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