SCHEDULE II - CONSOLIDATED VALUATION AND QUALIFYING ACCOUNTS (Details) - Parent Company - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	$ 1,550	$ 1,242
Charged to expense	1,208	1,395
Deductions	(422)	(1,087)
Balance at end of period	$ 2,336	$ 1,550