INCOME TAXES - Tax Effects of Temporary Differences (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Income Tax Disclosure [Abstract]    
Current deferred tax asset, net $ 520 $ 1,371
Non-current deferred tax asset, net 8,027 743
Current deferred tax liability, net (587) (69)
Non-current deferred tax liability, net (5,731) (1,114)
Net deferred tax asset 2,229 931
Deferred tax assets:    
Deferred charges 1,191 0
Deferred revenue 0 1,206
Related party accrued expenses 0 33
Deferred contract costs 0 398
Other accruals 1,774 581
Research and development credits 2,406 0
Capital lease obligation 124 240
Foreign tax credit and AMT credit carry forwards 12,538 7,764
Financing costs 0 334
Unrealized loss 507 379
Property and equipment 1,981 636
Net operating loss carry forwards 13,749 3,590
Total deferred tax assets 34,270 15,161
Less: valuation allowance (25,723) (6,998)
Total deferred tax assets, net 8,547 8,163
Deferred tax liabilities:    
Other receivables (329) (69)
Property and equipment (5,416) (6,787)
Foreign exchange gain 0 (61)
Deferred contract costs (258) 0
Intangible assets (315) (315)
Total deferred tax liabilities (6,318) (7,232)
Net deferred tax asset $ 2,229 $ 931