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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Operating activities:    
Net loss $ (5,510) $ 2,384
Adjustments to reconcile net (loss) income to net cash provided by operating activities:    
Depreciation, amortization and accretion 7,752 6,553
Deferred income tax (benefit) expense (907) 15
Stock-based compensation 6,036 4,160
Provisions for doubtful accounts, service credits and other 765 914
Changes in assets and liabilities:    
Accounts receivable 2,165 (1,019)
Prepaid expenses and other assets 202 1,726
Net operating lease liabilities 778 (50)
Accounts payable, accrued liabilities and other 300 3,591
Deferred revenue (2,053) 2,680
Net cash provided by operating activities 9,528 20,954
Investing activities:    
Purchases of property and equipment (3,103) (2,824)
Capitalized software development (8,239) (8,206)
Purchase of short-term investments (44,990) (44,870)
Maturity of short-term investments 45,000 45,000
Net cash used in investing activities (11,332) (10,900)
Financing activities:    
Cash distributions to stockholders (7,590) (7,388)
Proceeds from issuance of common stock under the Employee Stock Purchase Plan 132 166
Purchase of common stock for tax withholding on vested equity awards (1,860) (903)
Net cash used in financing activities (9,318) (8,125)
Effect of exchange rate on cash and cash equivalents (146) (55)
Net (decrease) increase in cash and cash equivalents (11,268) 1,874
Cash and cash equivalents, beginning of period 48,729 47,361
Cash and cash equivalents, end of period 37,461 49,235
Supplemental disclosure:    
Income taxes (refunds received) paid $ (165) $ 148