FAIR VALUE (Details) - USD ($)
$ in Thousands |
Dec. 31, 2015 |
Dec. 31, 2014 |
| Carrying Amount [Member] |
|
|
| Financial Assets [Abstract] |
|
|
| Cash and cash equivalents |
$ 38,420
|
$ 12,299
|
| Restricted cash |
7,362
|
30,000
|
| Prepaid expenses and other current assets |
2,566
|
3,937
|
| Noncurrent restricted cash |
15,259
|
|
| Financial Liabilities [Abstract] |
|
|
| Accrued expenses |
10,999
|
13,865
|
| Other short-term liabilities |
686
|
780
|
| Term loan |
44,653
|
|
| Credit agreement |
|
30,000
|
| Fair Value [Member] |
|
|
| Financial Assets [Abstract] |
|
|
| Cash and cash equivalents |
38,420
|
12,299
|
| Restricted cash |
7,362
|
30,000
|
| Prepaid expenses and other current assets |
2,566
|
3,937
|
| Noncurrent restricted cash |
15,259
|
|
| Financial Liabilities [Abstract] |
|
|
| Accrued expenses |
10,999
|
13,865
|
| Other short-term liabilities |
686
|
780
|
| Term loan |
36,795
|
|
| Credit agreement |
|
30,000
|
| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value [Member] |
|
|
| Financial Assets [Abstract] |
|
|
| Cash and cash equivalents |
38,420
|
12,299
|
| Restricted cash |
7,362
|
30,000
|
| Prepaid expenses and other current assets |
0
|
0
|
| Noncurrent restricted cash |
15,259
|
|
| Financial Liabilities [Abstract] |
|
|
| Accrued expenses |
0
|
0
|
| Other short-term liabilities |
0
|
0
|
| Term loan |
0
|
|
| Credit agreement |
|
0
|
| Significant Other Observable Inputs (Level 2) [Member] | Fair Value [Member] |
|
|
| Financial Assets [Abstract] |
|
|
| Cash and cash equivalents |
0
|
0
|
| Restricted cash |
0
|
0
|
| Prepaid expenses and other current assets |
2,566
|
3,937
|
| Noncurrent restricted cash |
0
|
|
| Financial Liabilities [Abstract] |
|
|
| Accrued expenses |
10,999
|
13,865
|
| Other short-term liabilities |
686
|
780
|
| Term loan |
36,795
|
|
| Credit agreement |
|
30,000
|
| Significant Unobservable Inputs (Level 3) [Member] | Fair Value [Member] |
|
|
| Financial Assets [Abstract] |
|
|
| Cash and cash equivalents |
0
|
0
|
| Restricted cash |
0
|
0
|
| Prepaid expenses and other current assets |
0
|
0
|
| Noncurrent restricted cash |
0
|
|
| Financial Liabilities [Abstract] |
|
|
| Accrued expenses |
0
|
0
|
| Other short-term liabilities |
0
|
0
|
| Term loan |
$ 0
|
|
| Credit agreement |
|
$ 0
|