FINANCING RECEIVABLES - Summary of Financing Receivables (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Customer balances with amounts reclassified to trade accounts receivable that are:
1 to 90 Days Past Due	$ 2,187	$ 515
91 to 180 Days Past Due	108	230
181 Plus Days Past Due	0	0
Total customer balances with past due amounts reclassified to trade accounts receivable	2,295	745
Total customer balances with no past due amounts reclassified to trade accounts receivable	2,207	2,228
Total financing receivables with contractual maturities of one year or less	11,376	9,826
Less: allowance for losses	(699)	(654)	$ (1,001)
Total financing receivables	$ 15,179	$ 12,145