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Derivative Instruments (Details) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Derivative [Line Items] |  |  |  |
Expired cash flow hedge reclassified from AOCI to interest expense | $ (1,100) | $ 1,100 |  |
Other Assets |  |  |  |
Derivative [Line Items] |  |  |  |
Fair values of interest rate corridor instrument |  |  | $ 600 |
Interest Rate Corridor |  |  |  |
Derivative [Line Items] |  |  |  |
Description of interest rate risk hedge at several thresholds |  | Company paid variable interest monthly based on the 30-day LIBOR rates until that index reached 1.5%. If 30-day LIBOR was equal to 1.5% through 3.0%, the Company paid 1.5%. If 30-day LIBOR exceeded 3.0%, the Company paid actual 30-day LIBOR less 1.5%. |  |
Interest Rate Corridor | 30-day LIBOR |  |  |  |
Derivative [Line Items] |  |  |  |
LIBOR interest rate at which the cash flow hedge interest rate corridor terms become effective |  | 1.50% |  |
Interest rate to be paid when variable base rate falls within the interest rate corridor |  | 1.50% |  |
Percentage deducted from LIBOR to determine interest rate to be paid when LIBOR rate exceeds the interest rate corridor |  | 1.50% |  |
Interest Rate Corridor | 30-day LIBOR | Minimum |  |  |  |
Derivative [Line Items] |  |  |  |
Variable interest rate corridor percentage |  | 1.50% |  |
Interest Rate Corridor | 30-day LIBOR | Maximum |  |  |  |
Derivative [Line Items] |  |  |  |
Variable interest rate corridor percentage |  | 3.00% |  |
Cash Flow Hedging |  |  |  |
Derivative [Line Items] |  |  |  |
Effective portion of gain (loss) on derivatives included as a component of other comprehensive income |  | $ (497) |  |
Effective portion of gain (loss) on derivatives included as a component of other comprehensive income |  |  | $ 157 | $ 17

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- Definition The effective interest rate to be paid when the variable base rate falls within the specified interest rate corridor per the terms of the cash flow hedge agreement. + References No definition available. + Details
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