DEBT (Tables)

12 Months Ended

Dec. 31, 2019

Debt Disclosure [Abstract]

Schedule of Component of Debt Liability Carrying Values

The carrying values of the liability's components are reflected in the Company's accompanying consolidated balance sheets as follows:

	December 31,
	2019		2018
Principal	$	215,000	$	215,000
Less: Debt issuance costs, net of amortization	(1,687)		(2,692)
Net liability carrying amount	$	213,313	$	212,308

Schedule of Liability Interest Expense

Interest expense related to the liability is reflected on the accompanying consolidated statements of income for the years ended:

	December 31,
	2019			2018
Amortization of debt issuance costs	$	1,004		$	794
Interest expense	7,676			7,083
Total interest expense recognized	$	8,680		$	7,877
Effective interest rate	4.01		%	3.80		%

Interest expense related to the Notes is reflected on the accompanying consolidated statements of income as follows:

	Year Ended December 31,
	2019			2018
Amortization of debt issuance costs	$	753		$	694
Non-cash amortization of debt discount	7,153			6,855
Interest expense	3,594			3,594
Net liability carrying amount	$	11,500		$	11,143
Effective interest rate	4.68		%	4.68		%

Schedule of Outstanding Exchangeable Note

In January 2017, the Company issued $287,500 aggregate principal amount of Exchangeable Senior Notes (the "Notes") due 2024. The following table summarizes some key facts and terms regarding the outstanding Notes:

	Due 2024
Issuance date	January 18, 2017
Maturity date	January 15, 2024
Principal amount	$	287,500
Cash coupon rate (per annum)	1.25		%
Conversion rate effective September 15, 2023 (per $1000 principal amount)	12.026
Effective conversion price effective September 15, 2023 (per ADS)	$	83.15

Schedule of Carrying Values

The carrying values of the liability and equity components of the Notes are reflected in the Company's accompanying consolidated balance sheets as follows:

	December 31,
	2019		2018
Principal	$	287,500	$	287,500
Less:
Debt issuance costs, net of amortization	(3,735)		(4,488)
Unamortized discount	(32,182)		(39,335)
Net liability carrying amount	$	251,583	$	243,677
Equity component - net carrying value	$	51,176	$	51,176