Debt and Bank Borrowings - Schedule of 2021 Revolving Credit Agreement and 2019 Credit Agreement (Details) $ in Thousands	Jun. 30, 2021 USD ($)
2021 Revolving Credit Agreement | Class A
Debt Instrument [Line Items]
Principal	$ 37,500
Unamortized debt premium	213
Net carrying value	37,713
2021 Revolving Credit Agreement | Class B
Debt Instrument [Line Items]
Principal	10,000
Unamortized debt premium	740
Net carrying value	10,740
2019 Credit Agreement
Debt Instrument [Line Items]
Principal	30,000
Unamortized debt premium	1,081
Net carrying value	31,081
2021 Revolving Credit Agreement and the 2019 Credit Agreement
Debt Instrument [Line Items]
Principal	77,500
Unamortized debt premium	2,034
Net carrying value	$ 79,534