ACCRUED EXPENSES (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Payables and Accruals [Abstract]
Compensation	$ 8,738us-gaap_AccruedSalariesCurrent	$ 7,977us-gaap_AccruedSalariesCurrent
Royalties	4,454us-gaap_AccruedRoyaltiesCurrent	3,243us-gaap_AccruedRoyaltiesCurrent
Research and development agreements	570	2,158
Professional fees	507us-gaap_AccruedProfessionalFeesCurrent	458us-gaap_AccruedProfessionalFeesCurrent
Consulting	370oled_AccruedConsultingFeesCurrent	338oled_AccruedConsultingFeesCurrent
Other	347us-gaap_OtherAccruedLiabilitiesCurrent	301us-gaap_OtherAccruedLiabilitiesCurrent
Inventory	0oled_AccruedInventory	1,564oled_AccruedInventory
Accrued expenses	$ 14,986us-gaap_AccruedLiabilitiesCurrent	$ 16,039us-gaap_AccruedLiabilitiesCurrent

Carrying value as of the balance sheet date of obligations incurred through that date and payable for professional fees, such as for legal and accounting services received. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for royalties. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of the obligations incurred through that date and payable for employees' services provided. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable arising from transactions not otherwise specified in the taxonomy. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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