LEASES - Future minimum lease payments for operating and capital leases under ASC 840 (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Operating Leases
2019	$ 11,663
2020	8,640
2021	5,675
2022	3,821
2023	2,282
Thereafter	8,268
Total lease payments	40,349
Capital Leases
2019	13,798
2020	8,303
2021	3,471
2022	2,582
2023	1,489
Thereafter	6,405
Total lease payments	36,048
Less: Interest	(5,686)
Present value of the lease payments	$ 30,362