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SIGNIFICANT ACCOUNTING POLICIES - Recently Adopted Accounting Pronouncements (Details) - USD ($) $ in Thousands	Jan. 01, 2018	Jan. 01, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained earnings			$ 33,767	$ 57,225	$ 43,833	$ 52,349
Accumulated other comprehensive loss			(22,222)	(21,791)
Assets			$ 947,361	$ 930,946
ASU 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Pre-tax impact to retained earnings	$ 4,378
Cumulative impact to retained earnings	3,319
ASU 2018-02 \| New Accounting Pronouncement, Early Adoption, Effect
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained earnings	(593)
Accumulated other comprehensive loss	$ 593
ASU 2016-02 \| Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Assets		$ 1,500
Liabilities		$ 1,500