SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND PRACTICES - New Accounting Standards - Cumulative Effect at Adoption Date of Applying ASU 2014-09 (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
ASSETS
Prepaid expenses and other current assets	$ 19,445		$ 17,950
Inventory	48,540		49,703
LIABILITIES AND EQUITY
Other accrued liabilities	95,308		$ 92,472
Adjustments to apply ASC 606 | ASU 2014-09
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Pre-tax increase to the opening balance of retained earnings		$ 8,800
Tax impact resulting in reduction to opening balance of retained earnings		2,000
ASSETS
Prepaid expenses and other current assets	3,124	8,500
Inventory		(400)
LIABILITIES AND EQUITY
Other accrued liabilities		$ (700)
Without adoption of ASC 606 | ASU 2014-09
ASSETS
Prepaid expenses and other current assets	$ 16,321