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Lines of Credit (Details) - USD ($) | Jun. 13, 2016 | Mar. 31, 2017
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Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |
Line of Credit Facility [Line Items] |  |
Credit facility variable interest rate basis spread (as a percent) | 1.00% |
Line of Credit [Member] |  |
Line of Credit Facility [Line Items] |  |
Credit facility term | 5 years |
Credit facility expiration date | Jun. 12, 2021 |
Borrowings outstanding |  | $ 0
2016 Credit Facility [Member] | Revolving Credit Facility [Member] |  |
Line of Credit Facility [Line Items] |  |
Credit facility maximum borrowing capacity | $ 300,000,000 |
Credit facility stated percentage | 0.00% |
Credit facility accordion feature, increase limit | $ 100,000,000 |
2016 Credit Facility [Member] | Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |
Line of Credit Facility [Line Items] |  |
Credit facility description of variable rate basis | London InterBank Offered Rate |
2016 Credit Facility [Member] | Revolving Credit Facility [Member] | Federal Funds Rate [Member] |  |
Line of Credit Facility [Line Items] |  |
Credit facility variable interest rate basis spread (as a percent) | 0.50% |
Credit facility description of variable rate basis | Federal Funds Rate |
2016 Credit Facility [Member] | Minimum [Member] | Revolving Credit Facility [Member] |  |
Line of Credit Facility [Line Items] |  |
Credit facility commitment fee per annum on daily unused portion (as a percent) | 0.15% |
2016 Credit Facility [Member] | Minimum [Member] | Revolving Credit Facility [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% |
2016 Credit Facility [Member] | Minimum [Member] | Revolving Credit Facility [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% |
2016 Credit Facility [Member] | Maximum [Member] | Revolving Credit Facility [Member] |  |
Line of Credit Facility [Line Items] |  |
Credit facility commitment fee per annum on daily unused portion (as a percent) | 0.30% |
2016 Credit Facility [Member] | Maximum [Member] | Revolving Credit Facility [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% |
2016 Credit Facility [Member] | Maximum [Member] | Revolving Credit Facility [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 The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR. + 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 Date the credit facility terminates, in CCYY-MM-DD format. + 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 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=73719730&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=73719730&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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