INCOME TAXES (NARRATIVE) (DETAILS) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended					12 Months Ended
	Dec. 31, 2015	Jun. 30, 2015	Mar. 31, 2015	Sep. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Statement Narrative [Line Items]
Total deferred tax assets, net	$ 82,988					$ 82,988	$ 78,654
Valuation allowances	10,139					$ 10,139	10,721	$ 10,792	$ 20,909
Net Change in Valuation Allowance	1,200	$ 200	$ 300
Tax Credit Carryforward, Description						As of December 31, 2015, domestically, the Company had federal tax credit carry forwards in the amount of $1.6 million that if unused will expire in 2021, $2.2 million that if unused will expire in 2022, $2.2 million that if unused will expire in 2023, $0.9 million that if unused will expire in 2024, and $1.7 million that if unused will expire in 2025. The Company also had state tax credit carry-forwards of $0.3 million that if unused will expire between 2016 and 2023.
Cumulative Amount Foregin Earnings Invested Outside United States	493,400					$ 493,400
Income Tax Holidays Description						The Company has been granted "Tax Holidays" as an incentive to attract foreign investment by the governments of the Philippines and Costa Rica. Generally, a Tax Holiday is an agreement between the Company and a foreign government under which the Company receives certain tax benefits in that country, such as exemption from taxation on profits derived from export-related activities. In the Philippines, the Company has been granted multiple agreements with an initial period of four years and additional periods for varying years, expiring at various times between 2011 and 2020.
Income Tax Holiday Termination Date						2011 and 2020
Aggregate Effect on Income Tax Expense for Income Tax Holiday Jurisdictions						$ 12,200	$ 20,200	$ 14,600
Diluted Net Income Per Share Effect For Income Tax Holiday Jurisdictions						$ 0.25	$ 0.27	$ 0.28
Total Interest and Penalties Accrued Related to Uncertain Tax Positions Recorded in Balance Sheets	709					$ 709	$ 132	$ 77
Reserve for Uncertain Tax Benefits, Net						3,700	$ 1,900
Decrease of Unrecognized Tax Benefits over Next 12 Months	3,700					3,700
Income Tax Examination, Penalties and Interest Accrued		$ 1,750
State Tax Credits And Nol [Member]
Income Statement Narrative [Line Items]
Net Change in Valuation Allowance						2,900
United States [Member]
Income Statement Narrative [Line Items]
Total deferred tax assets, net	40,400					$ 40,400
Income Tax Examination Years Under Audit						2009, 2011 and 2012
Foreign Jurisdictions [Member]
Income Statement Narrative [Line Items]
Total deferred tax assets, net	$ 8,400					$ 8,400
Foreign Jurisdictions [Member] | Not Realizable Standard [Member]
Income Statement Narrative [Line Items]
Net Change in Valuation Allowance						(1,800)
Canada [Member]
Income Statement Narrative [Line Items]
Tax Adjustments, Settlements, and Unusual Provisions					$ 1,200
Income Tax Examination Years Under Audit					2009 and 2010, and New Zealand for tax year 2013
Argentina [Member] | Not Realizable Standard [Member]
Income Statement Narrative [Line Items]
Net Change in Valuation Allowance						$ 4,300
Netherlands [Member]
Income Statement Narrative [Line Items]
Tax Adjustments, Settlements, and Unusual Provisions				$ 1,300
Income Tax Examination Years Under Audit				2010 and 2011