Consolidated Balance Sheets December 31, 1999 and 2000 (in thousands) (The accompanying notes are an integral part of these consolidated financial statements.) f -12 | 13 Forrester Research | Annual Report 2000 ASSETS 1999 2000 Current assets: Cash and cash equivalents $ 13,445 $ 15,848 Marketable securities 85,342 158,891 Accounts receivable, net of allowance for doubtful  accounts of approximately $580 and $1,293 in  1999 and 2000, respectively 36,988 49,923 Deferred commissions 4,850 7,873 Prepaid income taxes 1,187 3,632 Prepaid expenses and other current assets 4,142 6,255 Total current assets 145,954 242,422 Long-term assets: Property and equipment, net of accumulated  depreciation of approximately $7,498 and $14,204 in 1999 and 2000, respectively 11,619 22,128 Goodwill and other intangible assets, net of accumulated  amortization of approximately $261 in 2000 (Note 2) — 15,358 Deferred income taxes  — 16,968 Other assets 1,820 6,927 Total long-term assets 13,439 61,381 Total assets $159,393 $303,803 Current liabilities: Accounts payable $ 2,702 $ 3,993 Customer deposits 716 1,200 Accrued expenses 9,447 17,384 Accrued income taxes 617 1,771 Deferred revenue 66,233 102,527 Deferred income taxes 873 — Total current liabilities 80,588 126,875 Commitments (Notes 5 and 7) Stockholders’ equity: Preferred stock, $.01 par value Authorized — 500 shares Issued and outstanding — none — — Common stock, $.01 par value Authorized — 125,000 shares Issued and outstanding — 19,408 and 21,812 shares  in 1999 and 2000, respectively 194 218 Additional paid-in capital 54,771 131,018 Retained earnings 24,434 46,048 Accumulated other comprehensive loss (594) (356) Total stockholders’ equity 78,805 176,928 Total liabilities and stockholders’ equity $159,393 $303,803