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RELATED PARTY TRANSACTIONS (Details)
3 Months Ended 6 Months Ended
Mar. 01, 2016
USD ($)
item
Jun. 30, 2016
USD ($)
Jun. 30, 2015
USD ($)
Jun. 30, 2016
USD ($)
Jun. 30, 2015
USD ($)
BKF Capital          
RELATED PARTY TRANSACTIONS          
Number of offices leased out | item 1        
Revenue from related parties per month $ 1,000        
Revenue from related parties   $ 3,000 $ 4,000 $ 6,000 $ 4,000
Qualstar          
Due from Qualstar          
Due from Qualstar, beginning balance         5,000
Billed to Qualstar by Interlink   4,000 1,000 6,000 11,000
Paid by Qualstar to Interlink       (2,000) (15,000)
Due from Qualstar, end balance   4,000 1,000 4,000 1,000
Due to Qualstar          
Due to Qualstar, beginning balance   4,000 6,000 6,000 2,000
Billed to Interlink by Qualstar   9,000 13,000 20,000 30,000
Paid by Interlink to Qualstar   (10,000) (15,000) (23,000) (28,000)
Due to Qualstar, end balance   $ 3,000 $ 4,000 $ 3,000 $ 4,000