Subsequent Events Amendment to the Management Agreement with PRCM Advisers (Details) - USD ($) $ in Millions |
3 Months Ended | 12 Months Ended |
|---|---|---|
Mar. 31, 2018 |
Dec. 31, 2018 |
|
| Subsequent Event [Member] | ||
| Subsequent Event [Line Items] | ||
| One Time Downward Adjustment of Management Fees Payable | $ 15.0 | |
| Maximum Additional One Time Downward Adjustment of Management Fees Payable | $ 3.3 | |
| PRCM Advisers LLC [Member] | ||
| Subsequent Event [Line Items] | ||
| Percent per annum of equity used to calculate management fees | 1.50% | |
| PRCM Advisers LLC [Member] | Subsequent Event [Member] | ||
| Subsequent Event [Line Items] | ||
| Percent per annum of equity used to calculate management fees | 0.75% |
| X | ||||||||||
- Definition Percent per annum of stockholders' equity used to calculate the management fee due to PRCM Advisers. No definition available.
|
| X | ||||||||||
- Definition Maximum additional one-time downward adjustment of management fees payable to PRCM Advisers to be made in the fiscal quarter in which the closing of the proposed acquisition of CYS Investments, Inc. occurs (for certain transaction-related expenses). No definition available.
|
| X | ||||||||||
- Definition One-time downward adjustment of management fees payable to PRCM Advisers to be made in the fiscal quarter in which the closing of the proposed acquisition of CYS Investments, Inc. occurs. No definition available.
|
| X | ||||||||||
- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|