SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Changes in AOCI (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Changes in Accumulated Other Comprehensive Income (Loss)
Beginning Balance	$ (115)	$ 125	$ 78
Other comprehensive (loss) income before reclassifications	(350)	(200)	90
Amounts reclassified from accumulated other comprehensive loss	32	(40)	(43)
Net current period change in accumulated other comprehensive income (loss)	(318)	(240)	47
Ending Balance	(433)	(115)	125
Accumulated Net Unrealized Investment Gain Loss
Changes in Accumulated Other Comprehensive Income (Loss)
Beginning Balance	(115)	125	78
Other comprehensive (loss) income before reclassifications	(361)	(200)	90
Amounts reclassified from accumulated other comprehensive loss	32	(40)	(43)
Net current period change in accumulated other comprehensive income (loss)	(329)	(240)	47
Ending Balance	(444)	$ (115)	$ 125
Cumulative Translation Adjustment
Changes in Accumulated Other Comprehensive Income (Loss)
Other comprehensive (loss) income before reclassifications	11
Net current period change in accumulated other comprehensive income (loss)	11
Ending Balance	$ 11