Fair Value Measurements - Assets measured on nonrecurring basis (Details) - USD ($)
$ in Thousands

3 Months Ended

6 Months Ended

Jun. 30, 2020

Jun. 30, 2019

Jun. 30, 2020

Jun. 30, 2019

Dec. 31, 2019

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Debt securities held to maturity, estimated fair value

$ 9,078,298

$ 6,921,158

Debt securities held to maturity, total gains (losses)

$ (113)

Quoted Prices in Active Markets for Identical Assets, Level 1

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Debt securities held to maturity, estimated fair value

1,417,028

1,340,448

Significant Other Observable Inputs, Level 2

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Debt securities held to maturity, estimated fair value

7,037,707

4,912,399

Fair Value, Inputs, Level 3

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Debt securities held to maturity, estimated fair value

623,563

$ 668,311

Fair Value, measurements, nonrecurring

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Debt securities held to maturity, estimated fair value

$ 1,072

1,072

Debt securities held to maturity, total gains (losses)

(113)

Impaired loans

^[1]

3,404

Impaired loans, total gains (losses)

^[1]

(41,482)

(43,525)

OREO, fair value

14,871

15,302

14,871

15,302

OREO, total gains (losses)

(201)

(786)

(908)

(2,759)

Fair Value, measurements, nonrecurring | Fair Value, Inputs, Level 3

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Debt securities held to maturity, estimated fair value

1,072

Impaired loans

^[1]

3,404

OREO, fair value

$ 14,871

$ 15,302

$ 14,871

$ 15,302

[1]	Total gains (losses) represent charge-offs on impaired loans for which adjustments are based on the appraised value of the collateral.

BBVA USA Bancshares, Inc. 10-Q