XML 19 R15.htm IDEA: XBRL DOCUMENT
v3.19.3

Securities Held-to-Maturity | 9 Months Ended
--- | ---
Sep. 30, 2019
Text Block [Abstract] |
Securities Held-to-Maturity | 7. Securities Held-to-Maturity The following table is a summary of the Company’s securities held-to-maturity:
|  | September 30, 2019 |  |  | December 31, 2018 |
Federal agency debt instruments (amortized cost) |  | $ | 17,796 |  |  | $ | 20,180 |
The following table summarizes unrealized gains, losses, and fair value (classified as Level 2 within the fair value hierarchy) of securities held-to-maturity:
|  | September 30, 2019 |  |  | December 31, 2018 |
Cost/amortized cost |  | $ | 17,796 |  |  | $ | 20,180 |
Gross unrealized gains |  |  | 74 |  |  |  | 5 |
Gross unrealized losses |  |  | (77 | ) |  |  | (1,679 | )
Fair value |  | $ | 17,793 |  |  | $ | 18,506 |
The Company assesses these securities for other-than-temporary impairment on a quarterly basis. No securities were determined to be other-than-temporarily impaired at September 30, 2019 or December 31, 2018. The Company does not intend to sell these securities and it is not more-likely-than-not that the Company will be required to sell the securities before recovery of their amortized cost bases, which may be maturity. The following table sets forth the maturity profile of the securities held-to-maturity; however, these securities may be called prior to maturity date:
|  | September 30, 2019 |  |  | December 31, 2018 |
Due within one year |  | $ | — |  |  | $ | — |
Due one year through five years |  |  | 2,000 |  |  |  | — |
Due five years through ten years |  |  | 7,494 |  |  |  | 7,521 |
Due over ten years |  |  | 8,302 |  |  |  | 12,659 |
Total |  | $ | 17,796 |  |  | $ | 20,180 |

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

X
- Definition Securities held to maturity. + References No definition available. + Details
Name: | wetf_SecuritiesHeldToMaturityTextBlock
Namespace Prefix: | wetf_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration