FAIR VALUE MEASUREMENTS - Fair value hierarchy of the valuation inputs (Details) - USD ($) |
6 Months Ended | ||
|---|---|---|---|
Jun. 30, 2020 |
Jun. 30, 2019 |
Dec. 31, 2019 |
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
| Assets Held-in-trust | $ 177,073,484 | $ 176,625,548 | |
| Cash withdrawn from trust account | 359,985 | $ 411,518 | |
| U S Treasury Securities Money Market Fund [Member] | |||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
| Assets Held-in-trust | 177,073,484 | 176,625,548 | |
| Fair Value, Inputs, Level 1 [Member] | U S Treasury Securities Money Market Fund [Member] | |||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
| Assets Held-in-trust | $ 177,073,484 | $ 176,625,548 | |