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Condensed Consolidated Balance Sheets (unaudited) (USD $) In Thousands, unless otherwise specified | Jun. 30, 2013 | Dec. 31, 2012
--- | --- | ---
Current assets: |  |
Cash and cash equivalents | $ 76,767 | $ 61,637
Accounts receivable, net of allowance of $269 and $351, respectively | 26,602 | 33,959
Deferred tax assets - current portion | 6,217 | 3,589
Prepaid expenses and other current assets | 4,246 | 3,413
Total current assets | 113,832 | 102,598
Property and equipment, net | 5,799 | 3,898
Deferred tax assets - non-current portion | 11,349 | 16,471
Other non-current assets | 2,100 | 1,293
Total assets | 133,080 | 124,260
Current liabilities: |  |
Accounts payable | 1,049 | 2,054
Accrued compensation and related benefits | 7,138 | 10,723
Accrued and other current liabilities | 1,784 | 2,882
Deferred revenues | 2,890 | 3,232
Billings in excess of recognized revenues | 516 | 807
Total current liabilities | 13,377 | 19,698
Non-current liabilities | 3,256 | 3,502
Total liabilities | 16,633 | 23,200
Commitments and contingencies (Note 10) |  |
Stockholders’ equity: |  |
Preferred stock, $0.00015 par value, 5,000 shares authorized, no shares issued and outstanding | 0 | 0
Common stock, $0.00015 par value, 70,000 shares authorized: shares issued 34,630 and 34,027, respectively; shares outstanding 29,822 and 29,226, respectively | 4 | 4
Additional paid-in-capital | 226,682 | 220,361
Treasury stock at cost, 4,808 and 4,801 shares, respectively | (28,008) | (27,778)
Accumulated deficit | (82,295) | (91,578)
Accumulated other comprehensive income | 64 | 51
Total stockholders’ equity | 116,447 | 101,060
Total liabilities and stockholders’ equity | $ 133,080 | $ 124,260

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