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DEFERRED CONTRACT COSTS (Tables) | 12 Months Ended
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Dec. 31, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |
Schedule of Impairment of Deferred Contract Costs |
| December 31,
(in thousands) | 2018 |  | 2017
Deferred contract costs (1) (2) | $ | 64,367 |  |  | $ | 37,924 |
(1) Included in other long-term assets. (2) The increase in deferred contract costs is primarily due to revenue shift in favor of the Company’s cloud offerings, which results in a greater portion of contract costs being deferred than for license arrangements.
Schedule of Amortization of Deferred Contract Costs | Amortization of deferred contract costs was as follows:
(in thousands) | 2018 |  | 2017 |  | 2016
Amortization of deferred contract costs (1) | $ | 17,271 |  |  | $ | 12,106 |  |  | $ | 11,574 |
(1) Included in selling and marketing expenses.

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- Definition Tabular disclosure of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer; the aggregate carrying amount of current assets, not separately presented elsewhere in the balance sheet; and other deferred costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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