DEBT - Summary of Debt (Detail)
$ in Thousands
12 Months Ended
Dec. 31, 2017
USD ($)
Current Debt  
Balance at Jan. 1, 2017 $ 5,500
Principal payments (2,760)
Classification 0
Balance at Dec. 31, 2017 2,740
Debt Discount  
Balance at Jan. 1, 2017 (98)
Amortization expense 66
Classification 0
Balance at Dec. 31, 2017 (32)
Deferred Debt Issuance Costs  
Balance at Jan. 1, 2017 (47)
Amortization expense 33
Classification 0
Balance at Dec. 31, 2017 (14)
Current Debt, net at Dec. 31, 2017 2,694
Long-term [Member]  
Current Debt  
Balance at Jan. 1, 2017 2,979
Principal payments 0
Classification (2,979)
Balance at Dec. 31, 2017 0
Debt Discount  
Balance at Jan. 1, 2017 0
Amortization expense 0
Classification 0
Balance at Dec. 31, 2017 0
Deferred Debt Issuance Costs  
Balance at Jan. 1, 2017 0
Amortization expense 0
Classification 0
Balance at Dec. 31, 2017 0
Current Debt, net at Dec. 31, 2017 0
Current [Member]  
Current Debt  
Balance at Jan. 1, 2017 2,521
Principal payments (2,760)
Classification 2,979
Balance at Dec. 31, 2017 2,740
Debt Discount  
Balance at Jan. 1, 2017 (98)
Amortization expense 66
Classification 0
Balance at Dec. 31, 2017 (32)
Deferred Debt Issuance Costs  
Balance at Jan. 1, 2017 (47)
Amortization expense 33
Classification 0
Balance at Dec. 31, 2017 (14)
Current Debt, net at Dec. 31, 2017 $ 2,694