Consolidated Balance Sheet (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
ASSETS
Available-for-sale debt investment securities pledged as collateral at fair value	$ 479,432	$ 435,833
Allowance for loan losses	358,287	311,322
Loans held-for-sale pledged as collateral	22,431,092	20,590,035
Premises and equipment, accumulated depreciation	$ 116,790	$ 118,547
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)	166,621,959	165,867,587
Treasury stock, shares (in shares)	20,996,574	20,906,224

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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