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Line of Credit (Details) - Revolving Credit Facility [Member] - USD ($) |  | 1 Months Ended |
--- | --- | --- | ---
Jun. 13, 2016 | Apr. 19, 2018 | Jul. 31, 2017 | Mar. 31, 2018
Line of Credit Facility [Line Items] |  |  |  |
Credit facility term of agreement | 5 years |  |  |
Credit facility maximum borrowing capacity | $ 300,000,000 |  |  |
Credit facility stated percentage | 0.00% |  |  |
Credit facility accordion feature, increase limit | $ 100,000,000 |  |  |
Credit facility borrowings |  |  | $ 40,000,000 |
Credit facility amount outstanding at reporting date |  |  |  | $ 20,000,000
Subsequent Event [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Credit facility principal payment |  | $ 20,000,000 |  |
Credit facility remaining borrowing capacity |  | $ 300,000,000 |  |
London Interbank Offered Rate (LIBOR) [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Credit facility variable interest rate basis spread (as a percent) | 1.00% |  |  |
Federal Funds Rate [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Credit facility variable interest rate basis spread (as a percent) | 0.50% |  |  |
Minimum [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Credit facility commitment fee per annum on daily unused portion (as a percent) | 0.15% |  |  |
Minimum [Member] | Lender's Base Rate Plus Market Spread [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Credit facility variable interest rate basis spread (as a percent) | 0.25% |  |  |
Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Credit facility variable interest rate basis spread (as a percent) | 1.25% |  |  |
Maximum [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Credit facility commitment fee per annum on daily unused portion (as a percent) | 0.30% |  |  |
Maximum [Member] | Lender's Base Rate Plus Market Spread [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Credit facility variable interest rate basis spread (as a percent) | 1.00% |  |  |
Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Credit facility variable interest rate basis spread (as a percent) | 2.00% |  |  |

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- Definition Line of Credit Facility, Conditional Increase (Decrease), Net + References No definition available. + Details
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- 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 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 Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- 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=77997519&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=77997519&loc=d3e13476-108611 + 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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- 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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- Definition The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. + References No definition available. + Details
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- Definition Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -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=26873400&loc=d3e23780-122690 + Details
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- Definition The cash outflow for the settlement of obligation drawn from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 + Details
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