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Long-Term Debt - Additional Information (Detail) - USD ($) $ in Thousands |  | 1 Months Ended | 3 Months Ended |
--- | --- | --- | --- | ---
Feb. 20, 2018 | Feb. 28, 2018 | Mar. 31, 2019 | Mar. 31, 2018 | Mar. 29, 2019
Debt Instrument [Line Items] |  |  |  |  |
Maximum borrowing capacity |  | $ 175,000 |  |  |
Net proceeds from the initial term loan |  |  | $ 74,250 | $ 99,000 |
Principal amount including interest paid in kind |  | $ 177,300 | $ 177,300 |  |
Debt maturity date |  | Dec. 31, 2023 | Dec. 31, 2023 |  |
Loan Agreement |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Percentage of capital stock of subsidiaries subject to certain exception | 65.00% |  |  |  |
Debt instrument, covenant daily minimum combined cash and investment balance | $ 15,000 |  |  |  |
Interest expense related to initial term loan |  |  | $ 2,600 | $ 1,100 |
Loan Agreement | Maximum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Percentage of repayment premium of principal amount prepaid | 7.00% |  |  |  |
CRG Servicing LLC |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Maximum borrowing capacity | $ 175,000 |  |  |  |
Current borrowing capacity | $ 100,000 |  |  |  | $ 75,000
Debt interest rate | 9.50% |  |  |  |
Debt instrument interest rate, effective percentage |  |  | 10.20% |  |
Principal amount including interest paid in kind |  |  | $ 177,300 |  |
Debt maturity date | Dec. 31, 2023 |  |  |  |
CRG Servicing LLC | Initial Term Loan |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Net proceeds from the initial term loan | $ 99,000 |  |  |  |
CRG Servicing LLC | Second Tranche |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Net proceeds from the initial term loan | $ 74,300 |  |  |  |

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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6036836-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Carrying amount of collateralized debt obligations with maturities initially due after one year or beyond the operating cycle, if longer, excluding the current portion. Obligations include, but not limited to, mortgage loans, chattel loans, and other borrowings secured by assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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