INCOME TAXES - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Termite accrual	$ 1,241	$ 1,848
Insurance and contingencies	18,374	26,560
Unearned revenues	11,152	14,610
Compensation and benefits	11,157	15,798
State and foreign operating loss carryforwards	7,035	12,817
Bad debt reserve	3,203	4,842
Foreign tax credit	7,842	18,213
Other	1,861	1,804
Net Pension liability	0	1,109
Valuation allowance	(24)	(6,507)	$ (3,969)
Total deferred tax assets	61,841	91,094
Deferred tax liabilities:
Depreciation and amortization	(18,453)	(21,217)
Net Pension liability	(3,709)	0
Intangibles and other	(21,259)	(28,000)
Total deferred tax liabilities	(43,421)	(49,217)
Net deferred tax assets	$ 18,420	$ 41,877