Fair Value Measurements - Summary of Financial Assets and Liabilities Measured at Fair Value (Details) - Interest rate swap - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Level 1
Financial Instruments Measured at Fair Value: Available-for-sale securities - (Corporate equity securities)
Total Financial Liabilities	$ 0	$ 0
Level 2
Financial Instruments Measured at Fair Value: Available-for-sale securities - (Corporate equity securities)
Total Financial Liabilities	13	23
Level 3
Financial Instruments Measured at Fair Value: Available-for-sale securities - (Corporate equity securities)
Total Financial Liabilities	0	0
Carrying and Fair Value
Financial Instruments Measured at Fair Value: Available-for-sale securities - (Corporate equity securities)
Total Financial Liabilities	$ 13	$ 23