INCOME TAXES - Composition of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Long-term deferred income tax assets (liabilities):
Trade receivables allowance	$ 417	$ 418
Inventory capitalization	2,226	2,591
Accrued expenses	5,987	6,123
Deferred compensation	413	462
Inventory reserves	4,651	1,278
Federal NOL carryforwards	1,113	1,607
State NOL Carryforwards	953	2,060
Valuation allowance - NOL	(872)	(649)
Share based compensation	7,221	5,848
Operating lease right-of-use assets	(23,910)	0
Operating lease liabilities	24,160	0
Other	2,015	1,432
Intangibles	(28,160)	(26,419)
Depreciation expense	(22,368)	(16,562)
Prepaid expenses	(1,130)	(888)
Deferred tax liabilities, net	$ (27,284)	$ (22,699)