STOCKHOLDERS' EQUITY AND COMPENSATION ARRANGEMENTS Stock-based Compensation Expense (Details) - USD ($) |
3 Months Ended | |
---|---|---|
Mar. 31, 2019 |
Mar. 31, 2018 |
|
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized | $ 129,700,000 | |
Share-based Compensation | $ 16,411,000 | $ 19,326,000 |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition | 1 year 6 months | |
Cost of Sales [Member] | ||
Share-based Compensation | $ 378,000 | 396,000 |
Selling and Marketing Expense [Member] | ||
Share-based Compensation | 1,425,000 | 1,794,000 |
Selling, General and Administrative Expenses [Member] | ||
Share-based Compensation | 14,608,000 | 17,088,000 |
Other Income [Member] | ||
Share-based Compensation | $ 0 | $ 48,000 |