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RELATED-PARTY TRANSACTIONS - Legal Fees and Other Matters (Details) |  | 3 Months Ended | 6 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
Apr. 06, 2015 USD ($) | Mar. 31, 2017 USD ($) | Sep. 30, 2017 USD ($) letter_of_credit | Sep. 30, 2017 USD ($) letter_of_credit
Related Party Transaction [Line Items] |  |  |  |
Expenses from transactions with related parties | $ 263,000 |  |  |
Entity Affiliated with Former President and Chief Executive Officer | Legal Fees and Credit |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Legal services period (more than four months) |  |  |  | 4 months
Expenses from transactions with related parties |  | $ 330,000 | $ 0 |
Number of letters of credit outstanding | letter_of_credit |  |  | 3 | 3
Committed line of credit |  |  | $ 0 | $ 0
Entity Affiliated with Former President and Chief Executive Officer | Reimbursement of Legal Dispute |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Expenses from transactions with related parties |  | $ 100,000 |  |

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- Definition For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(e)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 + Details
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- Definition Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 + Details
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