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Derivative Instruments (Details) - USD ($)
$ in Thousands
 1 Months Ended 12 Months Ended
Dec. 31, 2019
Dec. 31, 2019
Derivative Instruments    
Expired cash flow hedge reclassified from AOCI to interest expense $ 1,100 $ 1,100
Interest Rate Corridor    
Derivative Instruments    
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 | LIBOR    
Derivative Instruments    
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 | LIBOR | Minimum    
Derivative Instruments    
Variable interest rate corridor percentage   1.50%
Interest Rate Corridor | LIBOR | Maximum    
Derivative Instruments    
Variable interest rate corridor percentage   3.00%
Cash Flow Hedging    
Derivative Instruments    
Effective portion of losses on derivatives included as a component of other comprehensive income, net of taxes   $ (497)