Consolidated Balance Sheet (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
ASSETS
Available for sale debt investment securities pledged as collateral, fair value	$ 745,163	$ 479,432
Available-for-sale (AFS), at amortized cost	3,823,714	3,320,648
Allowance for loan losses	632,071	358,287
Loans held-for-investment pledged as collateral	27,408,027	22,431,092
Premises and equipment, accumulated depreciation	$ 122,372	$ 116,790
STOCKHOLDERS’ EQUITY
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	200,000,000	200,000,000
Common stock, shares issued (in shares)	167,143,278	166,621,959
Treasury stock, shares (in shares)	25,656,881	20,996,574

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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