XML 49 R30.htm IDEA: XBRL DOCUMENT
v3.19.1

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2019
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |
Schedule of restricted cash and cash equivalents |
|  | March 31, |  | December 31, |  | March 31, |  | December 31, |
|  | 2019 |  | 2018 |  | 2018 |  | 2017 |
Cash and cash equivalents |  | $ | 187,713 |  | $ | 197,499 |  | $ | 172,775 |  | $ | 174,479 |
Restricted cash - current |  |  | 4,947 |  |  | 4,947 |  |  | 5,447 |  |  | 7,234 |
Restricted cash - noncurrent |  |  | 315 |  |  | 315 |  |  | 22,977 |  |  | 23,233 |
Cash, cash equivalents and restricted cash |  | $ | 192,975 |  | $ | 202,761 |  | $ | 201,199 |  | $ | 204,946 |

X
- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of supplemental cash flow information for the periods presented. + References No definition available. + Details
Name: | us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration