RECENT ACCOUNTING PRONOUNCEMENTS NEW ACCOUNTING PRONOUNCEMENTS (Narrative) (Details) - USD ($) $ in Thousands		Mar. 31, 2019	Jan. 01, 2019	Mar. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease assets		$ 11,599
Finance lease assets		1,584
Operating lease liabilities		11,615
ASU 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease assets			$ 12,100
Finance lease assets			12,100
Operating lease liabilities			$ 12,300
Cumulative effect adjustment	[1]	254
ASU 2016-02 | Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment	[1]	$ 254
ASU 2016-01 | Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment	[2]			$ 198

[1] (3) Effective January 1, 2019, the Company adopted ASU 2016-02, Leases, on a modified-retrospective basis. Refer to Note 2 for further details.

[2] (1)Effective January 1, 2018, the Company adopted ASU 2016-01, Income Statement - Financial Instruments. As a result of the adoption, the Company reclassified its unrealized gain on equity investments from accumulated other comprehensive loss to retained earnings.