Leases - Other information (Details) - ASU No. 2018-02, Leases (Topic 842) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
LEASES
Cash paid for amounts included in the measurement of lease liabilities - (in thousands)	$ 12,863
ROU assets obtained in exchange for lease liabilities (in thousands)	$ 7,992
Weighted average remaining lease term	5 years 6 months
Weighted average discount rate	3.58%