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STOCK AWARD PLANS (Tables)

6 Months Ended

Jun. 30, 2019

Share-based Payment Arrangement [Abstract]

Schedule of Stock-based Compensation

A summary of our total compensation expense recognized in our condensed consolidated statements of operations and comprehensive income for stock-based compensation is as follows (in thousands):

	Three Months Ended June 30,								Six Months Ended June 30,
	2019				2018				2019				2018
Stock options	$	4,461			$	7,263			$	8,710			$	12,265
Stock awards	9,584				18,692				21,328				30,904
Company expense on ESPP discount	639				615				1,769				1,535
Total stock-based compensation expense	$	14,684			$	26,570			$	31,807			$	44,704

Schedule Employee Stock Purchase Plan Activity

The following is a summary of the employee stock purchase plan activity: 

Three Months Ended June 30, 2019
Shares purchased by employees			Aggregate cost to employees				Expense recognized by the company
53,503			$	3,621,065			$	639,011

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Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

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Tabular disclosure of employee stock purchase plan activity.

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