Debt Obligations - Narrative (Details) - USD ($)
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|
1 Months Ended |
3 Months Ended |
6 Months Ended |
|
May 24, 2018 |
Jun. 30, 2018 |
Jun. 30, 2018 |
Jun. 30, 2017 |
Jun. 30, 2018 |
Jun. 30, 2017 |
Nov. 10, 2015 |
| Debt Instrument [Line Items] |
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| Interest expense |
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$ 5,560,000
|
$ 3,300,000
|
$ 8,979,000
|
$ 6,794,000
|
|
| Term loan |
|
$ 150,000,000
|
150,000,000
|
|
150,000,000
|
|
|
| Secured Debt | 2018 Term Loan |
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| Debt Instrument [Line Items] |
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| Debt instrument face amount |
$ 150,000,000
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| Debt instrument term |
5 years
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| Interest rate during period |
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6.84%
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| Frequency of periodic payment |
Quarterly
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| Periodic payment of principal |
$ 375,000
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| Prepayment premium (percent) |
1.00%
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| Prepayment penalty time period |
6 months
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| Interest expense |
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|
|
|
9,000,000
|
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| Debt issuance costs |
$ 1,800,000
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|
|
|
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| Original issue discount |
$ 986,000
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|
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|
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| Unamortized issuance cost and original issue discount |
|
$ 2,700,000
|
2,700,000
|
|
2,700,000
|
|
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| Term loan |
|
$ 150,000,000
|
150,000,000
|
|
150,000,000
|
|
|
| Debt instrument covenant, maximum debt-to-total capitalization ratio |
|
35.00%
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| Secured Debt | 2018 Term Loan | Eurodollar |
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| Debt Instrument [Line Items] |
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| Variable rate floor |
|
1.00%
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|
|
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| Basis spread on variable rate |
|
4.75%
|
|
|
|
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| Senior Secured Debt | 2015 Term Loan |
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| Debt Instrument [Line Items] |
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| Debt instrument face amount |
|
|
|
|
|
|
$ 150,000,000
|
| Costs related to extinguishment of debt |
|
|
|
|
2,200,000
|
|
|
| Revolving Credit Facility | 2018 Revolving Credit Facility |
|
|
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|
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| Debt Instrument [Line Items] |
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|
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| Debt instrument term |
3 years
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|
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|
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| Credit facility borrowing capacity |
$ 85,000,000
|
|
|
|
|
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| Debt issuance costs |
$ 1,500,000
|
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| Debt instrument covenant, maximum debt-to-total capitalization ratio |
|
35.00%
|
|
|
|
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| Borrowings outstanding |
|
$ 0
|
0
|
|
0
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|
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| Commitment fee (percent) |
|
0.50%
|
|
|
|
|
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| Commitment fees in interest expense |
|
$ 46,000
|
|
|
|
|
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| Remaining net debt issuance costs |
|
1,500,000
|
1,500,000
|
|
1,500,000
|
|
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| Accumulated amortization, debt issuance costs |
|
$ 42,000
|
$ 42,000
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|
$ 42,000
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| Revolving Credit Facility | 2018 Revolving Credit Facility | Minimum |
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| Debt Instrument [Line Items] |
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| Commitment fee (percent) |
0.30%
|
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| Revolving Credit Facility | 2018 Revolving Credit Facility | Maximum |
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| Debt Instrument [Line Items] |
|
|
|
|
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| Commitment fee (percent) |
0.60%
|
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| Revolving Credit Facility | 2018 Revolving Credit Facility | Base Rate |
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| Debt Instrument [Line Items] |
|
|
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| Variable rate floor |
1.00%
|
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| Revolving Credit Facility | 2018 Revolving Credit Facility | Base Rate | Minimum |
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| Debt Instrument [Line Items] |
|
|
|
|
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|
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| Basis spread on variable rate |
1.00%
|
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| Revolving Credit Facility | 2018 Revolving Credit Facility | Base Rate | Maximum |
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|
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| Debt Instrument [Line Items] |
|
|
|
|
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| Basis spread on variable rate |
2.50%
|
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| Revolving Credit Facility | 2018 Revolving Credit Facility | Eurodollar |
|
|
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| Debt Instrument [Line Items] |
|
|
|
|
|
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| Variable rate floor |
0.00%
|
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|
|
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| Revolving Credit Facility | 2018 Revolving Credit Facility | Eurodollar | Minimum |
|
|
|
|
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| Debt Instrument [Line Items] |
|
|
|
|
|
|
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| Basis spread on variable rate |
2.00%
|
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| Revolving Credit Facility | 2018 Revolving Credit Facility | Eurodollar | Maximum |
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| Debt Instrument [Line Items] |
|
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| Basis spread on variable rate |
3.50%
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