XML 64 R52.htm IDEA: XBRL DOCUMENT
v3.22.4

Description of Business and Summary of Significant Accounting Policies - Equity Investments Without a Readily Determinable Fair Value (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Equity Securities, Summary of Carrying Value [Roll Forward] |  |
Purchases | $ 350 | $ 0
Level 3 |  |
Equity Securities, Summary of Carrying Value [Roll Forward] |  |
Carrying value, beginning of period | 2,322 | 850
Observable price change | (100) | 1,472
Carrying value, end of period | $ 2,572 | $ 2,322

X
- Definition Equity Securities, Summary of Carrying Value + References No definition available. + Details
Name: | ck1437958_EquitySecuritiesSummaryOfCarryingValueRollForward
Namespace Prefix: | ck1437958_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Equity securities without readily determinable fair value addition of equity securities. + References No definition available. + Details
Name: | ck1437958_EquitySecuritiesWithoutReadilyDeterminableFairValueAdditionOfEquitySecurities
Namespace Prefix: | ck1437958_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Equity Securities without Readily Determinable Fair Value, Purchases + References No definition available. + Details
Name: | ck1437958_EquitySecuritiesWithoutReadilyDeterminableFairValuePurchases
Namespace Prefix: | ck1437958_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of investment in equity security without readily determinable fair value. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 321 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126980263&loc=SL75117539-209714 + Details
Name: | us-gaap_EquitySecuritiesWithoutReadilyDeterminableFairValueAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |