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v3.20.2

Derivatives - NSM Interest Rate Swap and Cap (Details) |  | 3 Months Ended | 9 Months Ended |  |  |  |  |  |  |  |  |
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Aug. 18, 2020 | Sep. 30, 2020 USD ($) | Sep. 30, 2019 USD ($) | Sep. 30, 2020 USD ($) | Sep. 30, 2019 USD ($) | Jun. 30, 2020 USD ($) | Jun. 04, 2020 GBP (£) | Jun. 04, 2020 USD ($) | Apr. 07, 2020 USD ($) | Mar. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Jun. 30, 2019 USD ($) | Dec. 31, 2018 USD ($) | Jun. 15, 2018 USD ($) | May 11, 2018 USD ($)
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total commitment under revolving credit facility |  |  |  |  |  |  |  |  | $ 291,400,000 | $ 234,000,000.0 |  |  |  |  |
Debt |  | $ 359,400,000 |  | $ 359,400,000 |  |  |  |  |  |  | $ 283,500,000 |  |  |  |
NSM Bank Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount borrowed |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 100,000,000.0
NSM Bank Facility | Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt |  | 268,800,000 |  | 268,800,000 |  |  |  |  |  |  | 217,400,000 |  |  |  |
Specialty Insurance Distribution (NSM) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt |  | $ 270,200,000 |  | $ 270,200,000 |  |  |  |  |  |  | 219,200,000 |  |  |  |
Specialty Insurance Distribution (NSM) | Interest Rate Swap |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, fixed interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.97% |
Derivative, variable interest rate |  | 1.00% |  | 1.00% |  |  |  |  |  |  |  |  |  |  |
Interest expense, net |  | $ 600,000 | $ 300,000 | $ 1,900,000 | $ 600,000 |  |  |  |  |  |  |  |  |  |
Derivative, fair value, net |  |  | 8,900,000 |  | 8,900,000 |  |  |  |  |  | 6,600,000 |  |  |  |
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax |  | 500,000 | (800,000) | (2,300,000) | (5,100,000) |  |  |  |  |  |  |  |  |  |
Specialty Insurance Distribution (NSM) | Interest Rate Cap |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments |  |  |  | (100,000) |  |  |  |  |  |  |  |  |  |  |
Derivative, fair value, net |  | $ 100,000 |  | 100,000 |  |  |  |  |  |  |  |  |  |  |
Derivative, Cost of Hedge |  |  |  | $ 100,000 |  |  |  |  |  |  |  |  |  |  |
GBP-LIBOR rate |  | 0.06% |  | 0.06% |  |  |  |  |  |  |  |  |  |  |
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax |  | $ (100,000) |  |  |  |  |  |  |  |  |  |  |  |  |
Specialty Insurance Distribution (NSM) | Interest Rate Cap | GBP-LIBOR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, cap interest rate |  | 1.25% |  | 1.25% |  |  |  |  |  |  |  |  |  |  |
Specialty Insurance Distribution (NSM) | NSM Bank Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt |  | $ 275,000,000.0 | $ 221,900,000 | $ 275,000,000.0 | $ 221,900,000 | $ 273,400,000 |  |  |  |  | $ 221,300,000 | $ 222,300,000 | $ 180,400,000 |  |
Debt, weighted average interest rate, all-in |  | 6.91% |  | 6.91% |  |  |  |  |  |  | 6.60% |  |  |  |
Amount borrowed |  | $ 275,000,000.0 |  | $ 275,000,000.0 |  |  |  |  |  |  |  |  |  |  |
Specialty Insurance Distribution (NSM) | NSM Bank Facility | Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount borrowed |  |  |  |  |  |  | £ 42,500,000 | $ 52,400,000 | $ 276,400,000 | $ 224,000,000.0 |  |  |  |  |
Specialty Insurance Distribution (NSM) | NSM Bank Facility | Term Loan | Designated as Hedging Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt, weighted average interest rate, all-in |  | 6.84% |  | 6.84% |  |  |  |  |  |  |  |  |  |  |
Specialty Insurance Distribution (NSM) | NSM Bank Facility | Interest Rate Swap | Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total commitment under revolving credit facility |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 151,000,000.0 |
Derivative, fixed interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.97% |
Debt |  | $ 148,000,000.0 |  | $ 148,000,000.0 |  |  |  |  |  |  |  |  |  |  |
Debt, weighted average interest rate, all-in |  |  |  |  |  | 6.98% |  |  |  |  |  |  |  |  |
Specialty Insurance Distribution (NSM) | NSM Bank Facility | Interest Rate Swap | Term Loan | Designated as Hedging Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt |  | $ 148,000,000.0 |  | $ 148,000,000.0 |  |  |  |  |  |  |  |  |  |  |
Debt, weighted average interest rate, all-in |  | 8.72% |  | 8.72% |  |  |  |  |  |  |  |  |  |  |
Specialty Insurance Distribution (NSM) | NSM Bank Facility | Interest Rate Cap |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount borrowed |  |  |  |  |  |  | £ 42,500,000 | $ 52,400,000 |  |  |  |  |  |  |
Debt instrument, term extension | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Amount of gain (loss) from the increase (decrease) in fair value of derivative and nonderivative instruments designated as fair value hedging instruments recognized in the income statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 25 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=121577467&loc=d3e76258-113986 + Details
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- Definition Cap rate on an interest rate derivative such as an interest rate cap or collar. If market rates exceed the cap rate, a payment or receipt is triggered on the contract. + References No definition available. + Details
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