Debt (New Revolver) (Detail) - New Revolver - USD ($)
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3 Months Ended |
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Mar. 21, 2017 |
Mar. 31, 2017 |
Apr. 03, 2017 |
| Line Of Credit Facility [Line Items] |
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|
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| Borrowing base amount |
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$ 400,000,000
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| Debt instrument maturity date |
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Mar. 21, 2021
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| Initial borrowing base amount |
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$ 225,000,000
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| Debt instrument redetermination date |
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May 01, 2018
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| Availability under the facility |
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$ 104,172,000
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| Commitment fee on unused portion of the borrowing base |
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0.50%
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| Letter of Credit |
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| Line Of Credit Facility [Line Items] |
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|
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| Basis spread on variable rate |
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0.125%
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| Alternate Base Rate |
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| Line Of Credit Facility [Line Items] |
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| Additional interest rate on outstanding amounts in event of default |
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2.00%
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| Outstanding borrowings, accruing interest rate |
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6.50%
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| Alternate Base Rate | Minimum |
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| Line Of Credit Facility [Line Items] |
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|
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| Basis spread on variable rate |
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2.00%
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| Alternate Base Rate | Maximum |
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| Line Of Credit Facility [Line Items] |
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|
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| Basis spread on variable rate |
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3.00%
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| Adjusted LIBO Rate |
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| Line Of Credit Facility [Line Items] |
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| One month interest period |
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1 month
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| Two month interest period |
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2 months
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| Three month interest period |
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3 months
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| Six month interest period |
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6 months
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| Adjusted LIBO Rate | Minimum |
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| Line Of Credit Facility [Line Items] |
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|
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| Basis spread on variable rate |
|
3.00%
|
|
| Adjusted LIBO Rate | Maximum |
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|
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| Line Of Credit Facility [Line Items] |
|
|
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| Basis spread on variable rate |
|
4.00%
|
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| Subsequent Event | Adjusted LIBO Rate |
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| Line Of Credit Facility [Line Items] |
|
|
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| Outstanding borrowings, accruing interest rate |
|
|
4.53%
|
| Existing Credit Facility |
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|
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| Line Of Credit Facility [Line Items] |
|
|
|
| Borrowing base amount |
$ 400,000,000
|
|
|
| Debt instrument maturity date |
Mar. 21, 2021
|
|
|
| Initial borrowing base amount |
$ 225,000,000
|
|
|
| Debt instrument redetermination date |
May 01, 2018
|
|
|
| Availability under the facility |
$ 104,172,000
|
|
|
| Commitment fee on unused portion of the borrowing base |
0.50%
|
|
|
| Number of days to make election to eliminate borrowings in excess of borrowing base as the result of a redetermination |
10 days
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| Existing Credit Facility | Letter of Credit |
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|
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| Line Of Credit Facility [Line Items] |
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|
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| Basis spread on variable rate |
0.125%
|
|
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| Existing Credit Facility | Election One |
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| Line Of Credit Facility [Line Items] |
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| Number of days to eliminate borrowings in excess of borrowing base as the result of a redetermination |
45 days
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| Existing Credit Facility | Election Two |
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| Line Of Credit Facility [Line Items] |
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| Number of days to eliminate borrowings in excess of borrowing base as the result of a redetermination |
45 days
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| Equal monthly installment period to eliminate borrowings in excess of borrowing base as the result of redetermination |
6 months
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| Existing Credit Facility | Alternate Base Rate |
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| Line Of Credit Facility [Line Items] |
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|
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| Additional interest rate on outstanding amounts in event of default |
2.00%
|
|
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| Existing Credit Facility | Alternate Base Rate | Minimum |
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|
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| Line Of Credit Facility [Line Items] |
|
|
|
| Basis spread on variable rate |
2.00%
|
|
|
| Existing Credit Facility | Alternate Base Rate | Maximum |
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|
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| Line Of Credit Facility [Line Items] |
|
|
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| Basis spread on variable rate |
3.00%
|
|
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| Existing Credit Facility | Adjusted LIBO Rate |
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| Line Of Credit Facility [Line Items] |
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|
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| One month interest period |
1 month
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|
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| Two month interest period |
2 months
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| Three month interest period |
3 months
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|
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| Six month interest period |
6 months
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|
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| Existing Credit Facility | Adjusted LIBO Rate | Minimum |
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|
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| Line Of Credit Facility [Line Items] |
|
|
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| Basis spread on variable rate |
3.00%
|
|
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| Existing Credit Facility | Adjusted LIBO Rate | Maximum |
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| Line Of Credit Facility [Line Items] |
|
|
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| Basis spread on variable rate |
4.00%
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