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v3.10.0.1

Note Payable - Narrative (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Oct. 31, 2014 | Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017 | Dec. 31, 2017
Debt Instrument [Line Items] |  |  |  |  |  |
Deferred financing costs |  | $ 1,700,000 |  | $ 1,700,000 |  | $ 2,900,000
Repayments of notes payable |  |  |  | $ 16,875,000 | $ 36,875,000 |
Bank Of America, N.A., Wells Fargo Bank, National Association, And Other Lenders [Member] | Line of credit |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Maximum borrowing capacity | $ 225,000,000.0 |  |  |  |  |
Potential maximum borrowing capacity increase | 50,000,000.0 |  |  |  |  |
Effective interest rate |  | 4.81% |  | 4.81% |  |
Interest expense |  | $ 600,000 | $ 1,000,000 | $ 2,300,000 | 3,300,000 |
Bank Of America, N.A., Wells Fargo Bank, National Association, And Other Lenders [Member] | Line of credit | Federal funds rate |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Spread on interest rate |  |  |  | 0.50% |  |
Bank Of America, N.A., Wells Fargo Bank, National Association, And Other Lenders [Member] | Line of credit | Base rate |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Spread on interest rate |  |  |  | 1.00% |  |
Bank Of America, N.A., Wells Fargo Bank, National Association, And Other Lenders [Member] | Line of credit | Minimum | LIBOR |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 2.50% |  |
Bank Of America, N.A., Wells Fargo Bank, National Association, And Other Lenders [Member] | Line of credit | Minimum | Base rate |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 1.50% |  |
Bank Of America, N.A., Wells Fargo Bank, National Association, And Other Lenders [Member] | Line of credit | Maximum | LIBOR |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 3.00% |  |
Bank Of America, N.A., Wells Fargo Bank, National Association, And Other Lenders [Member] | Line of credit | Maximum | Base rate |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 2.00% |  |
Bank Of America, N.A., Wells Fargo Bank, National Association, And Other Lenders [Member] | Term facility | Line of credit |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Maximum borrowing capacity | $ 150,000,000.0 |  |  |  |  |
Debt term | 5 years |  |  |  |  |
Quarterly principal payment |  |  |  | $ 5,600,000 |  |
Repayments of notes payable |  |  |  | $ 16,900,000 | $ 16,900,000 |
Bank Of America, N.A., Wells Fargo Bank, National Association, And Other Lenders [Member] | Revolving facility | Line of credit |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Maximum borrowing capacity | $ 75,000,000.0 |  |  |  |  |
Debt term | 5 years |  |  |  |  |

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